813528080

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:792

約数の個数: 80

約数和(自身を含む): 1921752000

約数和(自身を除く): 1108223920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 149, 278, 298, 491, 556, 596, 695, 745, 982, 1112, 1192, 1390, 1490, 1964, 2224, 2384, 2455, 2780, 2980, 3928, 4910, 5560, 5960, 7856, 9820, 11120, 11920, 19640, 20711, 39280, 41422, 68249, 73159, 82844, 103555, 136498, 146318, 165688, 207110, 272996, 292636, 331376, 341245, 365795, 414220, 545992, 585272, 682490, 731590, 828440, 1091984, 1170544, 1364980, 1463180, 1656880, 2729960, 2926360, 5459920, 5852720, 10169101, 20338202, 40676404, 50845505, 81352808, 101691010, 162705616, 203382020, 406764040, 813528080]

約数ペア:

[(1, 813528080), (2, 406764040), (4, 203382020), (5, 162705616), (8, 101691010), (10, 81352808), (16, 50845505), (20, 40676404), (40, 20338202), (80, 10169101), (139, 5852720), (149, 5459920), (278, 2926360), (298, 2729960), (491, 1656880), (556, 1463180), (596, 1364980), (695, 1170544), (745, 1091984), (982, 828440), (1112, 731590), (1192, 682490), (1390, 585272), (1490, 545992), (1964, 414220), (2224, 365795), (2384, 341245), (2455, 331376), (2780, 292636), (2980, 272996), (3928, 207110), (4910, 165688), (5560, 146318), (5960, 136498), (7856, 103555), (9820, 82844), (11120, 73159), (11920, 68249), (19640, 41422), (20711, 39280)]