213993520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{205763}}^1$

素因数の和:205789

約数の個数: 40

約数和(自身を含む): 535809456

約数和(自身を除く): 321815936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 205763, 411526, 823052, 1028815, 1646104, 2057630, 2674919, 3292208, 4115260, 5349838, 8230520, 10699676, 13374595, 16461040, 21399352, 26749190, 42798704, 53498380, 106996760, 213993520]

約数ペア:

[(1, 213993520), (2, 106996760), (4, 53498380), (5, 42798704), (8, 26749190), (10, 21399352), (13, 16461040), (16, 13374595), (20, 10699676), (26, 8230520), (40, 5349838), (52, 4115260), (65, 3292208), (80, 2674919), (104, 2057630), (130, 1646104), (208, 1028815), (260, 823052), (520, 411526), (1040, 205763)]