20643580

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2239}}^1$

素因数の和:2709

約数の個数: 24

約数和(自身を含む): 43464960

約数和(自身を除く): 22821380

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2239, 2305, 4478, 4610, 8956, 9220, 11195, 22390, 44780, 1032179, 2064358, 4128716, 5160895, 10321790, 20643580]

約数ペア:

[(1, 20643580), (2, 10321790), (4, 5160895), (5, 4128716), (10, 2064358), (20, 1032179), (461, 44780), (922, 22390), (1844, 11195), (2239, 9220), (2305, 8956), (4478, 4610)]