20505480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1597}}^1$

素因数の和:1718

約数の個数: 64

約数和(自身を含む): 62130240

約数和(自身を除く): 41624760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1597, 1605, 2140, 2568, 3194, 3210, 4280, 4791, 6388, 6420, 7985, 9582, 12776, 12840, 15970, 19164, 23955, 31940, 38328, 47910, 63880, 95820, 170879, 191640, 341758, 512637, 683516, 854395, 1025274, 1367032, 1708790, 2050548, 2563185, 3417580, 4101096, 5126370, 6835160, 10252740, 20505480]

約数ペア:

[(1, 20505480), (2, 10252740), (3, 6835160), (4, 5126370), (5, 4101096), (6, 3417580), (8, 2563185), (10, 2050548), (12, 1708790), (15, 1367032), (20, 1025274), (24, 854395), (30, 683516), (40, 512637), (60, 341758), (107, 191640), (120, 170879), (214, 95820), (321, 63880), (428, 47910), (535, 38328), (642, 31940), (856, 23955), (1070, 19164), (1284, 15970), (1597, 12840), (1605, 12776), (2140, 9582), (2568, 7985), (3194, 6420), (3210, 6388), (4280, 4791)]