397495880

素因数分解:

$2^3\times 5^1\times {\mathrm{2707}}^1\times {\mathrm{3671}}^1$

素因数の和:6389

約数の個数: 32

約数和(自身を含む): 894939840

約数和(自身を除く): 497443960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2707, 3671, 5414, 7342, 10828, 13535, 14684, 18355, 21656, 27070, 29368, 36710, 54140, 73420, 108280, 146840, 9937397, 19874794, 39749588, 49686985, 79499176, 99373970, 198747940, 397495880]

約数ペア:

[(1, 397495880), (2, 198747940), (4, 99373970), (5, 79499176), (8, 49686985), (10, 39749588), (20, 19874794), (40, 9937397), (2707, 146840), (3671, 108280), (5414, 73420), (7342, 54140), (10828, 36710), (13535, 29368), (14684, 27070), (18355, 21656)]