19509999376

素因数分解:

$2^4\times 7^1\times {\mathrm{2647}}^1\times {\mathrm{65809}}^1$

素因数の和:68471

約数の個数: 40

約数和(自身を含む): 43217690240

約数和(自身を除く): 23707690864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 2647, 5294, 10588, 18529, 21176, 37058, 42352, 65809, 74116, 131618, 148232, 263236, 296464, 460663, 526472, 921326, 1052944, 1842652, 3685304, 7370608, 174196423, 348392846, 696785692, 1219374961, 1393571384, 2438749922, 2787142768, 4877499844, 9754999688, 19509999376]

約数ペア:

[(1, 19509999376), (2, 9754999688), (4, 4877499844), (7, 2787142768), (8, 2438749922), (14, 1393571384), (16, 1219374961), (28, 696785692), (56, 348392846), (112, 174196423), (2647, 7370608), (5294, 3685304), (10588, 1842652), (18529, 1052944), (21176, 921326), (37058, 526472), (42352, 460663), (65809, 296464), (74116, 263236), (131618, 148232)]