31309160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 73180800

約数和(自身を除く): 41871640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 109, 167, 172, 215, 218, 334, 344, 430, 436, 545, 668, 835, 860, 872, 1090, 1336, 1670, 1720, 2180, 3340, 4360, 4687, 6680, 7181, 9374, 14362, 18203, 18748, 23435, 28724, 35905, 36406, 37496, 46870, 57448, 71810, 72812, 91015, 93740, 143620, 145624, 182030, 187480, 287240, 364060, 728120, 782729, 1565458, 3130916, 3913645, 6261832, 7827290, 15654580, 31309160]

約数ペア:

[(1, 31309160), (2, 15654580), (4, 7827290), (5, 6261832), (8, 3913645), (10, 3130916), (20, 1565458), (40, 782729), (43, 728120), (86, 364060), (109, 287240), (167, 187480), (172, 182030), (215, 145624), (218, 143620), (334, 93740), (344, 91015), (430, 72812), (436, 71810), (545, 57448), (668, 46870), (835, 37496), (860, 36406), (872, 35905), (1090, 28724), (1336, 23435), (1670, 18748), (1720, 18203), (2180, 14362), (3340, 9374), (4360, 7181), (4687, 6680)]