21089860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5639}}^1$

素因数の和:5676

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 30076220

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5639, 11278, 22556, 28195, 56390, 62029, 95863, 112780, 124058, 191726, 248116, 310145, 383452, 479315, 620290, 958630, 1054493, 1240580, 1917260, 2108986, 4217972, 5272465, 10544930, 21089860]

約数ペア:

[(1, 21089860), (2, 10544930), (4, 5272465), (5, 4217972), (10, 2108986), (11, 1917260), (17, 1240580), (20, 1054493), (22, 958630), (34, 620290), (44, 479315), (55, 383452), (68, 310145), (85, 248116), (110, 191726), (170, 124058), (187, 112780), (220, 95863), (340, 62029), (374, 56390), (748, 28195), (935, 22556), (1870, 11278), (3740, 5639)]