82131380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{57839}}^1$

素因数の和:57919

約数の個数: 24

約数和(自身を含む): 174908160

約数和(自身を除く): 92776780

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 57839, 115678, 231356, 289195, 578390, 1156780, 4106569, 8213138, 16426276, 20532845, 41065690, 82131380]

約数ペア:

[(1, 82131380), (2, 41065690), (4, 20532845), (5, 16426276), (10, 8213138), (20, 4106569), (71, 1156780), (142, 578390), (284, 289195), (355, 231356), (710, 115678), (1420, 57839)]