163640425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1619}}^1$

素因数の和:1953

約数の個数: 24

約数和(自身を含む): 219360960

約数和(自身を除く): 55720535

約数列:

[1, 5, 13, 25, 65, 311, 325, 1555, 1619, 4043, 7775, 8095, 20215, 21047, 40475, 101075, 105235, 503509, 526175, 2517545, 6545617, 12587725, 32728085, 163640425]

約数ペア:

[(1, 163640425), (5, 32728085), (13, 12587725), (25, 6545617), (65, 2517545), (311, 526175), (325, 503509), (1555, 105235), (1619, 101075), (4043, 40475), (7775, 21047), (8095, 20215)]