18889475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 25779600

約数和(自身を除く): 6890125

約数列:

[1, 5, 11, 25, 55, 149, 275, 461, 745, 1639, 2305, 3725, 5071, 8195, 11525, 25355, 40975, 68689, 126775, 343445, 755579, 1717225, 3777895, 18889475]

約数ペア:

[(1, 18889475), (5, 3777895), (11, 1717225), (25, 755579), (55, 343445), (149, 126775), (275, 68689), (461, 40975), (745, 25355), (1639, 11525), (2305, 8195), (3725, 5071)]