256869125

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:470

約数の個数: 32

約数和(自身を含む): 329412096

約数和(自身を除く): 72542971

約数列:

[1, 5, 25, 71, 103, 125, 281, 355, 515, 1405, 1775, 2575, 7025, 7313, 8875, 12875, 19951, 28943, 35125, 36565, 99755, 144715, 182825, 498775, 723575, 914125, 2054953, 2493875, 3617875, 10274765, 51373825, 256869125]

約数ペア:

[(1, 256869125), (5, 51373825), (25, 10274765), (71, 3617875), (103, 2493875), (125, 2054953), (281, 914125), (355, 723575), (515, 498775), (1405, 182825), (1775, 144715), (2575, 99755), (7025, 36565), (7313, 35125), (8875, 28943), (12875, 19951)]