80878390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{278891}}^1$

素因数の和:278927

約数の個数: 16

約数和(自身を含む): 150601680

約数和(自身を除く): 69723290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 278891, 557782, 1394455, 2788910, 8087839, 16175678, 40439195, 80878390]

約数ペア:

[(1, 80878390), (2, 40439195), (5, 16175678), (10, 8087839), (29, 2788910), (58, 1394455), (145, 557782), (290, 278891)]