20400153

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{1487}}^1$

素因数の和:1776

約数の個数: 16

約数和(自身を含む): 28926720

約数和(自身を除く): 8526567

約数列:

[1, 3, 17, 51, 269, 807, 1487, 4461, 4573, 13719, 25279, 75837, 400003, 1200009, 6800051, 20400153]

約数ペア:

[(1, 20400153), (3, 6800051), (17, 1200009), (51, 400003), (269, 75837), (807, 25279), (1487, 13719), (4461, 4573)]