397788575

素因数分解:

$5^2\times {\mathrm{103}}^1\times {\mathrm{241}}^1\times {\mathrm{641}}^1$

素因数の和:995

約数の個数: 24

約数和(自身を含む): 500893536

約数和(自身を除く): 103104961

約数列:

[1, 5, 25, 103, 241, 515, 641, 1205, 2575, 3205, 6025, 16025, 24823, 66023, 124115, 154481, 330115, 620575, 772405, 1650575, 3862025, 15911543, 79557715, 397788575]

約数ペア:

[(1, 397788575), (5, 79557715), (25, 15911543), (103, 3862025), (241, 1650575), (515, 772405), (641, 620575), (1205, 330115), (2575, 154481), (3205, 124115), (6025, 66023), (16025, 24823)]