1218620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 2845920

約数和(自身を除く): 1627300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 109, 130, 172, 215, 218, 260, 430, 436, 545, 559, 860, 1090, 1118, 1417, 2180, 2236, 2795, 2834, 4687, 5590, 5668, 7085, 9374, 11180, 14170, 18748, 23435, 28340, 46870, 60931, 93740, 121862, 243724, 304655, 609310, 1218620]

約数ペア:

[(1, 1218620), (2, 609310), (4, 304655), (5, 243724), (10, 121862), (13, 93740), (20, 60931), (26, 46870), (43, 28340), (52, 23435), (65, 18748), (86, 14170), (109, 11180), (130, 9374), (172, 7085), (215, 5668), (218, 5590), (260, 4687), (430, 2834), (436, 2795), (545, 2236), (559, 2180), (860, 1417), (1090, 1118)]