20198980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32579}}^1$

素因数の和:32619

約数の個数: 24

約数和(自身を含む): 43787520

約数和(自身を除く): 23588540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32579, 65158, 130316, 162895, 325790, 651580, 1009949, 2019898, 4039796, 5049745, 10099490, 20198980]

約数ペア:

[(1, 20198980), (2, 10099490), (4, 5049745), (5, 4039796), (10, 2019898), (20, 1009949), (31, 651580), (62, 325790), (124, 162895), (155, 130316), (310, 65158), (620, 32579)]