21086578

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{751}}^1$

素因数の和:993

約数の個数: 16

約数和(自身を含む): 32215680

約数和(自身を除く): 11129102

約数列:

[1, 2, 101, 139, 202, 278, 751, 1502, 14039, 28078, 75851, 104389, 151702, 208778, 10543289, 21086578]

約数ペア:

[(1, 21086578), (2, 10543289), (101, 208778), (139, 151702), (202, 104389), (278, 75851), (751, 28078), (1502, 14039)]