289021820

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{88657}}^1$

素因数の和:88829

約数の個数: 24

約数和(自身を含む): 610676304

約数和(自身を除く): 321654484

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 88657, 177314, 354628, 443285, 886570, 1773140, 14451091, 28902182, 57804364, 72255455, 144510910, 289021820]

約数ペア:

[(1, 289021820), (2, 144510910), (4, 72255455), (5, 57804364), (10, 28902182), (20, 14451091), (163, 1773140), (326, 886570), (652, 443285), (815, 354628), (1630, 177314), (3260, 88657)]