727021640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1\times {\mathrm{1277}}^1$

素因数の和:1662

約数の個数: 64

約数和(自身を含む): 1680212160

約数和(自身を除く): 953190520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 331, 344, 430, 662, 860, 1277, 1324, 1655, 1720, 2554, 2648, 3310, 5108, 6385, 6620, 10216, 12770, 13240, 14233, 25540, 28466, 51080, 54911, 56932, 71165, 109822, 113864, 142330, 219644, 274555, 284660, 422687, 439288, 549110, 569320, 845374, 1098220, 1690748, 2113435, 2196440, 3381496, 4226870, 8453740, 16907480, 18175541, 36351082, 72702164, 90877705, 145404328, 181755410, 363510820, 727021640]

約数ペア:

[(1, 727021640), (2, 363510820), (4, 181755410), (5, 145404328), (8, 90877705), (10, 72702164), (20, 36351082), (40, 18175541), (43, 16907480), (86, 8453740), (172, 4226870), (215, 3381496), (331, 2196440), (344, 2113435), (430, 1690748), (662, 1098220), (860, 845374), (1277, 569320), (1324, 549110), (1655, 439288), (1720, 422687), (2554, 284660), (2648, 274555), (3310, 219644), (5108, 142330), (6385, 113864), (6620, 109822), (10216, 71165), (12770, 56932), (13240, 54911), (14233, 51080), (25540, 28466)]