21428550

素因数分解:

$2^1\times 3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 240

約数和(自身を含む): 71839152

約数和(自身を除く): 50410602

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 13, 15, 18, 22, 25, 26, 27, 30, 33, 37, 39, 45, 50, 54, 55, 65, 66, 74, 75, 78, 81, 90, 99, 110, 111, 117, 130, 135, 143, 150, 162, 165, 185, 195, 198, 222, 225, 234, 270, 275, 286, 297, 325, 330, 333, 351, 370, 390, 405, 407, 429, 450, 481, 495, 550, 555, 585, 594, 650, 666, 675, 702, 715, 810, 814, 825, 858, 891, 925, 962, 975, 990, 999, 1053, 1110, 1170, 1221, 1287, 1350, 1430, 1443, 1485, 1650, 1665, 1755, 1782, 1850, 1950, 1998, 2025, 2035, 2106, 2145, 2405, 2442, 2475, 2574, 2775, 2886, 2925, 2970, 2997, 3330, 3510, 3575, 3663, 3861, 4050, 4070, 4290, 4329, 4455, 4810, 4950, 4995, 5265, 5291, 5550, 5850, 5994, 6105, 6435, 7150, 7215, 7326, 7425, 7722, 8325, 8658, 8775, 8910, 9990, 10175, 10530, 10582, 10725, 10989, 11583, 12025, 12210, 12870, 12987, 14430, 14850, 14985, 15873, 16650, 17550, 18315, 19305, 20350, 21450, 21645, 21978, 22275, 23166, 24050, 24975, 25974, 26325, 26455, 29970, 30525, 31746, 32175, 32967, 36075, 36630, 38610, 38961, 43290, 44550, 47619, 49950, 52650, 52910, 54945, 57915, 61050, 64350, 64935, 65934, 72150, 74925, 77922, 79365, 91575, 95238, 96525, 108225, 109890, 115830, 129870, 132275, 142857, 149850, 158730, 164835, 183150, 193050, 194805, 216450, 238095, 264550, 274725, 285714, 289575, 324675, 329670, 389610, 396825, 428571, 476190, 549450, 579150, 649350, 714285, 793650, 824175, 857142, 974025, 1190475, 1428570, 1648350, 1948050, 2142855, 2380950, 3571425, 4285710, 7142850, 10714275, 21428550]

約数ペア:

[(1, 21428550), (2, 10714275), (3, 7142850), (5, 4285710), (6, 3571425), (9, 2380950), (10, 2142855), (11, 1948050), (13, 1648350), (15, 1428570), (18, 1190475), (22, 974025), (25, 857142), (26, 824175), (27, 793650), (30, 714285), (33, 649350), (37, 579150), (39, 549450), (45, 476190), (50, 428571), (54, 396825), (55, 389610), (65, 329670), (66, 324675), (74, 289575), (75, 285714), (78, 274725), (81, 264550), (90, 238095), (99, 216450), (110, 194805), (111, 193050), (117, 183150), (130, 164835), (135, 158730), (143, 149850), (150, 142857), (162, 132275), (165, 129870), (185, 115830), (195, 109890), (198, 108225), (222, 96525), (225, 95238), (234, 91575), (270, 79365), (275, 77922), (286, 74925), (297, 72150), (325, 65934), (330, 64935), (333, 64350), (351, 61050), (370, 57915), (390, 54945), (405, 52910), (407, 52650), (429, 49950), (450, 47619), (481, 44550), (495, 43290), (550, 38961), (555, 38610), (585, 36630), (594, 36075), (650, 32967), (666, 32175), (675, 31746), (702, 30525), (715, 29970), (810, 26455), (814, 26325), (825, 25974), (858, 24975), (891, 24050), (925, 23166), (962, 22275), (975, 21978), (990, 21645), (999, 21450), (1053, 20350), (1110, 19305), (1170, 18315), (1221, 17550), (1287, 16650), (1350, 15873), (1430, 14985), (1443, 14850), (1485, 14430), (1650, 12987), (1665, 12870), (1755, 12210), (1782, 12025), (1850, 11583), (1950, 10989), (1998, 10725), (2025, 10582), (2035, 10530), (2106, 10175), (2145, 9990), (2405, 8910), (2442, 8775), (2475, 8658), (2574, 8325), (2775, 7722), (2886, 7425), (2925, 7326), (2970, 7215), (2997, 7150), (3330, 6435), (3510, 6105), (3575, 5994), (3663, 5850), (3861, 5550), (4050, 5291), (4070, 5265), (4290, 4995), (4329, 4950), (4455, 4810)]