20218297960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:792

約数の個数: 256

約数和(自身を含む): 55539302400

約数和(自身を除く): 35321004440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 53, 56, 62, 70, 71, 106, 124, 140, 142, 155, 212, 217, 248, 265, 280, 284, 310, 355, 371, 424, 434, 497, 530, 568, 619, 620, 710, 742, 868, 994, 1060, 1085, 1238, 1240, 1420, 1484, 1643, 1736, 1855, 1988, 2120, 2170, 2201, 2476, 2485, 2840, 2968, 3095, 3286, 3710, 3763, 3976, 4333, 4340, 4402, 4952, 4970, 6190, 6572, 7420, 7526, 8215, 8666, 8680, 8804, 9940, 11005, 11501, 12380, 13144, 14840, 15052, 15407, 16430, 17332, 17608, 18815, 19189, 19880, 21665, 22010, 23002, 24760, 26341, 30104, 30814, 32807, 32860, 34664, 37630, 38378, 43330, 43949, 44020, 46004, 52682, 57505, 61628, 65614, 65720, 75260, 76756, 77035, 86660, 87898, 88040, 92008, 95945, 105364, 115010, 116653, 123256, 131228, 131705, 134323, 150520, 153512, 154070, 164035, 173320, 175796, 191890, 210728, 219745, 229649, 230020, 233306, 262456, 263410, 268646, 307643, 308140, 328070, 351592, 383780, 439490, 459298, 460040, 466612, 526820, 537292, 583265, 615286, 616280, 656140, 671615, 767560, 816571, 878980, 918596, 933224, 1017017, 1053640, 1074584, 1148245, 1166530, 1230572, 1312280, 1343230, 1362419, 1538215, 1633142, 1757960, 1837192, 2034034, 2296490, 2329297, 2333060, 2461144, 2686460, 2724838, 3076430, 3266284, 4068068, 4082855, 4592980, 4658594, 4666120, 5085085, 5372920, 5449676, 6152860, 6532568, 6812095, 7119119, 8136136, 8165710, 9185960, 9317188, 9536933, 10170170, 10899352, 11646485, 12305720, 13624190, 14238238, 16305079, 16331420, 18634376, 19073866, 20340340, 23292970, 27248380, 28476476, 32610158, 32662840, 35595595, 38147732, 40680680, 46585940, 47684665, 54496760, 56952952, 65220316, 71191190, 72208207, 76295464, 81525395, 93171880, 95369330, 130440632, 142382380, 144416414, 163050790, 190738660, 284764760, 288832828, 326101580, 361041035, 381477320, 505457449, 577665656, 652203160, 722082070, 1010914898, 1444164140, 2021829796, 2527287245, 2888328280, 4043659592, 5054574490, 10109148980, 20218297960]

約数ペア:

[(1, 20218297960), (2, 10109148980), (4, 5054574490), (5, 4043659592), (7, 2888328280), (8, 2527287245), (10, 2021829796), (14, 1444164140), (20, 1010914898), (28, 722082070), (31, 652203160), (35, 577665656), (40, 505457449), (53, 381477320), (56, 361041035), (62, 326101580), (70, 288832828), (71, 284764760), (106, 190738660), (124, 163050790), (140, 144416414), (142, 142382380), (155, 130440632), (212, 95369330), (217, 93171880), (248, 81525395), (265, 76295464), (280, 72208207), (284, 71191190), (310, 65220316), (355, 56952952), (371, 54496760), (424, 47684665), (434, 46585940), (497, 40680680), (530, 38147732), (568, 35595595), (619, 32662840), (620, 32610158), (710, 28476476), (742, 27248380), (868, 23292970), (994, 20340340), (1060, 19073866), (1085, 18634376), (1238, 16331420), (1240, 16305079), (1420, 14238238), (1484, 13624190), (1643, 12305720), (1736, 11646485), (1855, 10899352), (1988, 10170170), (2120, 9536933), (2170, 9317188), (2201, 9185960), (2476, 8165710), (2485, 8136136), (2840, 7119119), (2968, 6812095), (3095, 6532568), (3286, 6152860), (3710, 5449676), (3763, 5372920), (3976, 5085085), (4333, 4666120), (4340, 4658594), (4402, 4592980), (4952, 4082855), (4970, 4068068), (6190, 3266284), (6572, 3076430), (7420, 2724838), (7526, 2686460), (8215, 2461144), (8666, 2333060), (8680, 2329297), (8804, 2296490), (9940, 2034034), (11005, 1837192), (11501, 1757960), (12380, 1633142), (13144, 1538215), (14840, 1362419), (15052, 1343230), (15407, 1312280), (16430, 1230572), (17332, 1166530), (17608, 1148245), (18815, 1074584), (19189, 1053640), (19880, 1017017), (21665, 933224), (22010, 918596), (23002, 878980), (24760, 816571), (26341, 767560), (30104, 671615), (30814, 656140), (32807, 616280), (32860, 615286), (34664, 583265), (37630, 537292), (38378, 526820), (43330, 466612), (43949, 460040), (44020, 459298), (46004, 439490), (52682, 383780), (57505, 351592), (61628, 328070), (65614, 308140), (65720, 307643), (75260, 268646), (76756, 263410), (77035, 262456), (86660, 233306), (87898, 230020), (88040, 229649), (92008, 219745), (95945, 210728), (105364, 191890), (115010, 175796), (116653, 173320), (123256, 164035), (131228, 154070), (131705, 153512), (134323, 150520)]