20119980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4723}}^1$

素因数の和:4806

約数の個数: 48

約数和(自身を含む): 57141504

約数和(自身を除く): 37021524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4723, 9446, 14169, 18892, 23615, 28338, 47230, 56676, 70845, 94460, 141690, 283380, 335333, 670666, 1005999, 1341332, 1676665, 2011998, 3353330, 4023996, 5029995, 6706660, 10059990, 20119980]

約数ペア:

[(1, 20119980), (2, 10059990), (3, 6706660), (4, 5029995), (5, 4023996), (6, 3353330), (10, 2011998), (12, 1676665), (15, 1341332), (20, 1005999), (30, 670666), (60, 335333), (71, 283380), (142, 141690), (213, 94460), (284, 70845), (355, 56676), (426, 47230), (710, 28338), (852, 23615), (1065, 18892), (1420, 14169), (2130, 9446), (4260, 4723)]