21404912

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{11839}}^1$

素因数の和:11960

約数の個数: 20

約数和(自身を含む): 41842560

約数和(自身を除く): 20437648

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 11839, 23678, 47356, 94712, 189424, 1337807, 2675614, 5351228, 10702456, 21404912]

約数ペア:

[(1, 21404912), (2, 10702456), (4, 5351228), (8, 2675614), (16, 1337807), (113, 189424), (226, 94712), (452, 47356), (904, 23678), (1808, 11839)]