20858416

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3251}}^1$

素因数の和:3660

約数の個数: 20

約数和(自身を含む): 40526424

約数和(自身を除く): 19668008

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3251, 6416, 6502, 13004, 26008, 52016, 1303651, 2607302, 5214604, 10429208, 20858416]

約数ペア:

[(1, 20858416), (2, 10429208), (4, 5214604), (8, 2607302), (16, 1303651), (401, 52016), (802, 26008), (1604, 13004), (3208, 6502), (3251, 6416)]