18797780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30319}}^1$

素因数の和:30359

約数の個数: 24

約数和(自身を含む): 40750080

約数和(自身を除く): 21952300

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30319, 60638, 121276, 151595, 303190, 606380, 939889, 1879778, 3759556, 4699445, 9398890, 18797780]

約数ペア:

[(1, 18797780), (2, 9398890), (4, 4699445), (5, 3759556), (10, 1879778), (20, 939889), (31, 606380), (62, 303190), (124, 151595), (155, 121276), (310, 60638), (620, 30319)]