400002625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{691}}^1$

素因数の和:1138

約数の個数: 32

約数和(自身を含む): 546668928

約数和(自身を除く): 146666303

約数列:

[1, 5, 11, 25, 55, 125, 275, 421, 691, 1375, 2105, 3455, 4631, 7601, 10525, 17275, 23155, 38005, 52625, 86375, 115775, 190025, 290911, 578875, 950125, 1454555, 3200021, 7272775, 16000105, 36363875, 80000525, 400002625]

約数ペア:

[(1, 400002625), (5, 80000525), (11, 36363875), (25, 16000105), (55, 7272775), (125, 3200021), (275, 1454555), (421, 950125), (691, 578875), (1375, 290911), (2105, 190025), (3455, 115775), (4631, 86375), (7601, 52625), (10525, 38005), (17275, 23155)]