20415120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:94

約数の個数: 240

約数和(自身を含む): 75203520

約数和(自身を除く): 54788400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 19, 20, 22, 24, 30, 33, 37, 38, 40, 44, 48, 55, 57, 60, 66, 74, 76, 80, 88, 95, 110, 111, 114, 120, 121, 132, 148, 152, 165, 176, 185, 190, 209, 220, 222, 228, 240, 242, 264, 285, 296, 304, 330, 363, 370, 380, 407, 418, 440, 444, 456, 484, 528, 555, 570, 592, 605, 627, 660, 703, 726, 740, 760, 814, 836, 880, 888, 912, 968, 1045, 1110, 1140, 1210, 1221, 1254, 1320, 1406, 1452, 1480, 1520, 1628, 1672, 1776, 1815, 1936, 2035, 2090, 2109, 2220, 2280, 2299, 2420, 2442, 2508, 2640, 2812, 2904, 2960, 3135, 3256, 3344, 3515, 3630, 4070, 4180, 4218, 4440, 4477, 4560, 4598, 4840, 4884, 5016, 5624, 5808, 6105, 6270, 6512, 6897, 7030, 7260, 7733, 8140, 8360, 8436, 8880, 8954, 9196, 9680, 9768, 10032, 10545, 11248, 11495, 12210, 12540, 13431, 13794, 14060, 14520, 15466, 16280, 16720, 16872, 17908, 18392, 19536, 21090, 22385, 22990, 23199, 24420, 25080, 26862, 27588, 28120, 29040, 30932, 32560, 33744, 34485, 35816, 36784, 38665, 42180, 44770, 45980, 46398, 48840, 50160, 53724, 55176, 56240, 61864, 67155, 68970, 71632, 77330, 84360, 85063, 89540, 91960, 92796, 97680, 107448, 110352, 115995, 123728, 134310, 137940, 154660, 168720, 170126, 179080, 183920, 185592, 214896, 231990, 255189, 268620, 275880, 309320, 340252, 358160, 371184, 425315, 463980, 510378, 537240, 551760, 618640, 680504, 850630, 927960, 1020756, 1074480, 1275945, 1361008, 1701260, 1855920, 2041512, 2551890, 3402520, 4083024, 5103780, 6805040, 10207560, 20415120]

約数ペア:

[(1, 20415120), (2, 10207560), (3, 6805040), (4, 5103780), (5, 4083024), (6, 3402520), (8, 2551890), (10, 2041512), (11, 1855920), (12, 1701260), (15, 1361008), (16, 1275945), (19, 1074480), (20, 1020756), (22, 927960), (24, 850630), (30, 680504), (33, 618640), (37, 551760), (38, 537240), (40, 510378), (44, 463980), (48, 425315), (55, 371184), (57, 358160), (60, 340252), (66, 309320), (74, 275880), (76, 268620), (80, 255189), (88, 231990), (95, 214896), (110, 185592), (111, 183920), (114, 179080), (120, 170126), (121, 168720), (132, 154660), (148, 137940), (152, 134310), (165, 123728), (176, 115995), (185, 110352), (190, 107448), (209, 97680), (220, 92796), (222, 91960), (228, 89540), (240, 85063), (242, 84360), (264, 77330), (285, 71632), (296, 68970), (304, 67155), (330, 61864), (363, 56240), (370, 55176), (380, 53724), (407, 50160), (418, 48840), (440, 46398), (444, 45980), (456, 44770), (484, 42180), (528, 38665), (555, 36784), (570, 35816), (592, 34485), (605, 33744), (627, 32560), (660, 30932), (703, 29040), (726, 28120), (740, 27588), (760, 26862), (814, 25080), (836, 24420), (880, 23199), (888, 22990), (912, 22385), (968, 21090), (1045, 19536), (1110, 18392), (1140, 17908), (1210, 16872), (1221, 16720), (1254, 16280), (1320, 15466), (1406, 14520), (1452, 14060), (1480, 13794), (1520, 13431), (1628, 12540), (1672, 12210), (1776, 11495), (1815, 11248), (1936, 10545), (2035, 10032), (2090, 9768), (2109, 9680), (2220, 9196), (2280, 8954), (2299, 8880), (2420, 8436), (2442, 8360), (2508, 8140), (2640, 7733), (2812, 7260), (2904, 7030), (2960, 6897), (3135, 6512), (3256, 6270), (3344, 6105), (3515, 5808), (3630, 5624), (4070, 5016), (4180, 4884), (4218, 4840), (4440, 4598), (4477, 4560)]