20851271

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1933}}^1$

素因数の和:2030

約数の個数: 16

約数和(自身を含む): 25250304

約数和(自身を除く): 4399033

約数列:

[1, 7, 23, 67, 161, 469, 1541, 1933, 10787, 13531, 44459, 129511, 311213, 906577, 2978753, 20851271]

約数ペア:

[(1, 20851271), (7, 2978753), (23, 906577), (67, 311213), (161, 129511), (469, 44459), (1541, 13531), (1933, 10787)]