18406375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 25369344

約数和(自身を除く): 6962969

約数列:

[1, 5, 13, 25, 47, 65, 125, 235, 241, 325, 611, 1175, 1205, 1625, 3055, 3133, 5875, 6025, 11327, 15275, 15665, 30125, 56635, 76375, 78325, 147251, 283175, 391625, 736255, 1415875, 3681275, 18406375]

約数ペア:

[(1, 18406375), (5, 3681275), (13, 1415875), (25, 736255), (47, 391625), (65, 283175), (125, 147251), (235, 78325), (241, 76375), (325, 56635), (611, 30125), (1175, 15665), (1205, 15275), (1625, 11327), (3055, 6025), (3133, 5875)]