20851691

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1039}}^1$

素因数の和:1154

約数の個数: 16

約数和(自身を含む): 24760320

約数和(自身を除く): 3908629

約数列:

[1, 7, 47, 61, 329, 427, 1039, 2867, 7273, 20069, 48833, 63379, 341831, 443653, 2978813, 20851691]

約数ペア:

[(1, 20851691), (7, 2978813), (47, 443653), (61, 341831), (329, 63379), (427, 48833), (1039, 20069), (2867, 7273)]