204397640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{71971}}^1$

素因数の和:72053

約数の個数: 32

約数和(自身を含む): 466378560

約数和(自身を除く): 261980920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 71971, 143942, 287884, 359855, 575768, 719710, 1439420, 2878840, 5109941, 10219882, 20439764, 25549705, 40879528, 51099410, 102198820, 204397640]

約数ペア:

[(1, 204397640), (2, 102198820), (4, 51099410), (5, 40879528), (8, 25549705), (10, 20439764), (20, 10219882), (40, 5109941), (71, 2878840), (142, 1439420), (284, 719710), (355, 575768), (568, 359855), (710, 287884), (1420, 143942), (2840, 71971)]