15940540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{941}}^1$

素因数の和:979

約数の個数: 72

約数和(自身を含む): 42096096

約数和(自身を除く): 26155556

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 941, 1210, 1540, 1694, 1882, 2420, 3388, 3764, 4235, 4705, 6587, 8470, 9410, 10351, 13174, 16940, 18820, 20702, 26348, 32935, 41404, 51755, 65870, 72457, 103510, 113861, 131740, 144914, 207020, 227722, 289828, 362285, 455444, 569305, 724570, 797027, 1138610, 1449140, 1594054, 2277220, 3188108, 3985135, 7970270, 15940540]

約数ペア:

[(1, 15940540), (2, 7970270), (4, 3985135), (5, 3188108), (7, 2277220), (10, 1594054), (11, 1449140), (14, 1138610), (20, 797027), (22, 724570), (28, 569305), (35, 455444), (44, 362285), (55, 289828), (70, 227722), (77, 207020), (110, 144914), (121, 131740), (140, 113861), (154, 103510), (220, 72457), (242, 65870), (308, 51755), (385, 41404), (484, 32935), (605, 26348), (770, 20702), (847, 18820), (941, 16940), (1210, 13174), (1540, 10351), (1694, 9410), (1882, 8470), (2420, 6587), (3388, 4705), (3764, 4235)]