20704978

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{39971}}^1$

素因数の和:40017

約数の個数: 16

約数和(自身を含む): 36454464

約数和(自身を除く): 15749486

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 39971, 79942, 279797, 559594, 1478927, 2957854, 10352489, 20704978]

約数ペア:

[(1, 20704978), (2, 10352489), (7, 2957854), (14, 1478927), (37, 559594), (74, 279797), (259, 79942), (518, 39971)]