20884358

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{211}}^1\times {\mathrm{409}}^1$

素因数の和:644

約数の個数: 24

約数和(自身を含む): 34681080

約数和(自身を除く): 13796722

約数列:

[1, 2, 11, 22, 121, 211, 242, 409, 422, 818, 2321, 4499, 4642, 8998, 25531, 49489, 51062, 86299, 98978, 172598, 949289, 1898578, 10442179, 20884358]

約数ペア:

[(1, 20884358), (2, 10442179), (11, 1898578), (22, 949289), (121, 172598), (211, 98978), (242, 86299), (409, 51062), (422, 49489), (818, 25531), (2321, 8998), (4499, 4642)]