85757780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{138319}}^1$

素因数の和:138359

約数の個数: 24

約数和(自身を含む): 185902080

約数和(自身を除く): 100144300

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 138319, 276638, 553276, 691595, 1383190, 2766380, 4287889, 8575778, 17151556, 21439445, 42878890, 85757780]

約数ペア:

[(1, 85757780), (2, 42878890), (4, 21439445), (5, 17151556), (10, 8575778), (20, 4287889), (31, 2766380), (62, 1383190), (124, 691595), (155, 553276), (310, 276638), (620, 138319)]