21353968

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13759}}^1$

素因数の和:13864

約数の個数: 20

約数和(自身を含む): 41802880

約数和(自身を除く): 20448912

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13759, 27518, 55036, 110072, 220144, 1334623, 2669246, 5338492, 10676984, 21353968]

約数ペア:

[(1, 21353968), (2, 10676984), (4, 5338492), (8, 2669246), (16, 1334623), (97, 220144), (194, 110072), (388, 55036), (776, 27518), (1552, 13759)]