20215764580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2136973}}^1$

素因数の和:2137036

約数の個数: 48

約数和(自身を含む): 47389535424

約数和(自身を除く): 27173770844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2365, 4730, 9460, 2136973, 4273946, 8547892, 10684865, 21369730, 23506703, 42739460, 47013406, 91889839, 94026812, 117533515, 183779678, 235067030, 367559356, 459449195, 470134060, 918898390, 1010788229, 1837796780, 2021576458, 4043152916, 5053941145, 10107882290, 20215764580]

約数ペア:

[(1, 20215764580), (2, 10107882290), (4, 5053941145), (5, 4043152916), (10, 2021576458), (11, 1837796780), (20, 1010788229), (22, 918898390), (43, 470134060), (44, 459449195), (55, 367559356), (86, 235067030), (110, 183779678), (172, 117533515), (215, 94026812), (220, 91889839), (430, 47013406), (473, 42739460), (860, 23506703), (946, 21369730), (1892, 10684865), (2365, 8547892), (4730, 4273946), (9460, 2136973)]