80109790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{90011}}^1$

素因数の和:90107

約数の個数: 16

約数和(自身を含む): 145819440

約数和(自身を除く): 65709650

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 90011, 180022, 450055, 900110, 8010979, 16021958, 40054895, 80109790]

約数ペア:

[(1, 80109790), (2, 40054895), (5, 16021958), (10, 8010979), (89, 900110), (178, 450055), (445, 180022), (890, 90011)]