28135877

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{15887}}^1$

素因数の和:15928

約数の個数: 16

約数和(自身を含む): 36605952

約数和(自身を除く): 8470075

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 15887, 111209, 174757, 365401, 1223299, 2557807, 4019411, 28135877]

約数ペア:

[(1, 28135877), (7, 4019411), (11, 2557807), (23, 1223299), (77, 365401), (161, 174757), (253, 111209), (1771, 15887)]