21965968

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1697}}^1$

素因数の和:2514

約数の個数: 20

約数和(自身を含む): 42636780

約数和(自身を除く): 20670812

約数列:

[1, 2, 4, 8, 16, 809, 1618, 1697, 3236, 3394, 6472, 6788, 12944, 13576, 27152, 1372873, 2745746, 5491492, 10982984, 21965968]

約数ペア:

[(1, 21965968), (2, 10982984), (4, 5491492), (8, 2745746), (16, 1372873), (809, 27152), (1618, 13576), (1697, 12944), (3236, 6788), (3394, 6472)]