81310760

素因数分解:

$2^3\times 5^1\times {\mathrm{2032769}}^1$

素因数の和:2032780

約数の個数: 16

約数和(自身を含む): 182949300

約数和(自身を除く): 101638540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2032769, 4065538, 8131076, 10163845, 16262152, 20327690, 40655380, 81310760]

約数ペア:

[(1, 81310760), (2, 40655380), (4, 20327690), (5, 16262152), (8, 10163845), (10, 8131076), (20, 4065538), (40, 2032769)]