251521228

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{289771}}^1$

素因数の和:289813

約数の個数: 24

約数和(自身を含む): 519271424

約数和(自身を除く): 267750196

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 289771, 579542, 1159084, 2028397, 4056794, 8113588, 8982901, 17965802, 35931604, 62880307, 125760614, 251521228]

約数ペア:

[(1, 251521228), (2, 125760614), (4, 62880307), (7, 35931604), (14, 17965802), (28, 8982901), (31, 8113588), (62, 4056794), (124, 2028397), (217, 1159084), (434, 579542), (868, 289771)]