81311020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580793}}^1$

素因数の和:580809

約数の個数: 24

約数和(自身を含む): 195146784

約数和(自身を除く): 113835764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580793, 1161586, 2323172, 2903965, 4065551, 5807930, 8131102, 11615860, 16262204, 20327755, 40655510, 81311020]

約数ペア:

[(1, 81311020), (2, 40655510), (4, 20327755), (5, 16262204), (7, 11615860), (10, 8131102), (14, 5807930), (20, 4065551), (28, 2903965), (35, 2323172), (70, 1161586), (140, 580793)]