21125237

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1571}}^1$

素因数の和:1708

約数の個数: 16

約数和(自身を含む): 25805952

約数和(自身を除く): 4680715

約数列:

[1, 7, 17, 113, 119, 791, 1571, 1921, 10997, 13447, 26707, 177523, 186949, 1242661, 3017891, 21125237]

約数ペア:

[(1, 21125237), (7, 3017891), (17, 1242661), (113, 186949), (119, 177523), (791, 26707), (1571, 13447), (1921, 10997)]