21511912

素因数分解:

$2^3\times {\mathrm{239}}^1\times {\mathrm{11251}}^1$

素因数の和:11496

約数の個数: 16

約数和(自身を含む): 40507200

約数和(自身を除く): 18995288

約数列:

[1, 2, 4, 8, 239, 478, 956, 1912, 11251, 22502, 45004, 90008, 2688989, 5377978, 10755956, 21511912]

約数ペア:

[(1, 21511912), (2, 10755956), (4, 5377978), (8, 2688989), (239, 90008), (478, 45004), (956, 22502), (1912, 11251)]