399939025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{2843}}^1$

素因数の和:3201

約数の個数: 24

約数和(自身を含む): 526868064

約数和(自身を除く): 126929039

約数列:

[1, 5, 17, 25, 85, 331, 425, 1655, 2843, 5627, 8275, 14215, 28135, 48331, 71075, 140675, 241655, 941033, 1208275, 4705165, 15997561, 23525825, 79987805, 399939025]

約数ペア:

[(1, 399939025), (5, 79987805), (17, 23525825), (25, 15997561), (85, 4705165), (331, 1208275), (425, 941033), (1655, 241655), (2843, 140675), (5627, 71075), (8275, 48331), (14215, 28135)]