21987416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{249857}}^1$

素因数の和:249874

約数の個数: 16

約数和(自身を含む): 44974440

約数和(自身を除く): 22987024

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 249857, 499714, 999428, 1998856, 2748427, 5496854, 10993708, 21987416]

約数ペア:

[(1, 21987416), (2, 10993708), (4, 5496854), (8, 2748427), (11, 1998856), (22, 999428), (44, 499714), (88, 249857)]