19920280

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1571}}^1$

素因数の和:1899

約数の個数: 32

約数和(自身を含む): 44990640

約数和(自身を除く): 25070360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1571, 1585, 2536, 3142, 3170, 6284, 6340, 7855, 12568, 12680, 15710, 31420, 62840, 498007, 996014, 1992028, 2490035, 3984056, 4980070, 9960140, 19920280]

約数ペア:

[(1, 19920280), (2, 9960140), (4, 4980070), (5, 3984056), (8, 2490035), (10, 1992028), (20, 996014), (40, 498007), (317, 62840), (634, 31420), (1268, 15710), (1571, 12680), (1585, 12568), (2536, 7855), (3142, 6340), (3170, 6284)]