20128451

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 23493120

約数和(自身を除く): 3364669

約数列:

[1, 7, 137, 139, 151, 959, 973, 1057, 19043, 20687, 20989, 133301, 144809, 146923, 2875493, 20128451]

約数ペア:

[(1, 20128451), (7, 2875493), (137, 146923), (139, 144809), (151, 133301), (959, 20989), (973, 20687), (1057, 19043)]