18095260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 39717216

約数和(自身を除く): 21621956

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 397, 430, 530, 794, 860, 1060, 1588, 1985, 2279, 3970, 4558, 7940, 9116, 11395, 17071, 21041, 22790, 34142, 42082, 45580, 68284, 84164, 85355, 105205, 170710, 210410, 341420, 420820, 904763, 1809526, 3619052, 4523815, 9047630, 18095260]

約数ペア:

[(1, 18095260), (2, 9047630), (4, 4523815), (5, 3619052), (10, 1809526), (20, 904763), (43, 420820), (53, 341420), (86, 210410), (106, 170710), (172, 105205), (212, 85355), (215, 84164), (265, 68284), (397, 45580), (430, 42082), (530, 34142), (794, 22790), (860, 21041), (1060, 17071), (1588, 11395), (1985, 9116), (2279, 7940), (3970, 4558)]