80897620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{863}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 175633920

約数和(自身を除く): 94736300

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 172, 215, 218, 430, 436, 545, 860, 863, 1090, 1726, 2180, 3452, 4315, 4687, 8630, 9374, 17260, 18748, 23435, 37109, 46870, 74218, 93740, 94067, 148436, 185545, 188134, 371090, 376268, 470335, 742180, 940670, 1881340, 4044881, 8089762, 16179524, 20224405, 40448810, 80897620]

約数ペア:

[(1, 80897620), (2, 40448810), (4, 20224405), (5, 16179524), (10, 8089762), (20, 4044881), (43, 1881340), (86, 940670), (109, 742180), (172, 470335), (215, 376268), (218, 371090), (430, 188134), (436, 185545), (545, 148436), (860, 94067), (863, 93740), (1090, 74218), (1726, 46870), (2180, 37109), (3452, 23435), (4315, 18748), (4687, 17260), (8630, 9374)]