18886460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21961}}^1$

素因数の和:22013

約数の個数: 24

約数和(自身を含む): 40585776

約数和(自身を除く): 21699316

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21961, 43922, 87844, 109805, 219610, 439220, 944323, 1888646, 3777292, 4721615, 9443230, 18886460]

約数ペア:

[(1, 18886460), (2, 9443230), (4, 4721615), (5, 3777292), (10, 1888646), (20, 944323), (43, 439220), (86, 219610), (172, 109805), (215, 87844), (430, 43922), (860, 21961)]