21098713040

素因数分解:

$2^4\times 5^1\times {\mathrm{2251}}^1\times {\mathrm{117163}}^1$

素因数の和:119427

約数の個数: 40

約数和(自身を含む): 49076719008

約数和(自身を除く): 27978005968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2251, 4502, 9004, 11255, 18008, 22510, 36016, 45020, 90040, 117163, 180080, 234326, 468652, 585815, 937304, 1171630, 1874608, 2343260, 4686520, 9373040, 263733913, 527467826, 1054935652, 1318669565, 2109871304, 2637339130, 4219742608, 5274678260, 10549356520, 21098713040]

約数ペア:

[(1, 21098713040), (2, 10549356520), (4, 5274678260), (5, 4219742608), (8, 2637339130), (10, 2109871304), (16, 1318669565), (20, 1054935652), (40, 527467826), (80, 263733913), (2251, 9373040), (4502, 4686520), (9004, 2343260), (11255, 1874608), (18008, 1171630), (22510, 937304), (36016, 585815), (45020, 468652), (90040, 234326), (117163, 180080)]