21000742040

素因数分解:

$2^3\times 5^1\times {\mathrm{12073}}^1\times {\mathrm{43487}}^1$

素因数の和:55571

約数の個数: 32

約数和(自身を含む): 47256670080

約数和(自身を除く): 26255928040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 12073, 24146, 43487, 48292, 60365, 86974, 96584, 120730, 173948, 217435, 241460, 347896, 434870, 482920, 869740, 1739480, 525018551, 1050037102, 2100074204, 2625092755, 4200148408, 5250185510, 10500371020, 21000742040]

約数ペア:

[(1, 21000742040), (2, 10500371020), (4, 5250185510), (5, 4200148408), (8, 2625092755), (10, 2100074204), (20, 1050037102), (40, 525018551), (12073, 1739480), (24146, 869740), (43487, 482920), (48292, 434870), (60365, 347896), (86974, 241460), (96584, 217435), (120730, 173948)]