388290620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{318271}}^1$

素因数の和:318341

約数の個数: 24

約数和(自身を含む): 828780288

約数和(自身を除く): 440489668

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 318271, 636542, 1273084, 1591355, 3182710, 6365420, 19414531, 38829062, 77658124, 97072655, 194145310, 388290620]

約数ペア:

[(1, 388290620), (2, 194145310), (4, 97072655), (5, 77658124), (10, 38829062), (20, 19414531), (61, 6365420), (122, 3182710), (244, 1591355), (305, 1273084), (610, 636542), (1220, 318271)]