86437640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10859}}^1$

素因数の和:11069

約数の個数: 32

約数和(自身を含む): 195480000

約数和(自身を除く): 109042360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10859, 21718, 43436, 54295, 86872, 108590, 217180, 434360, 2160941, 4321882, 8643764, 10804705, 17287528, 21609410, 43218820, 86437640]

約数ペア:

[(1, 86437640), (2, 43218820), (4, 21609410), (5, 17287528), (8, 10804705), (10, 8643764), (20, 4321882), (40, 2160941), (199, 434360), (398, 217180), (796, 108590), (995, 86872), (1592, 54295), (1990, 43436), (3980, 21718), (7960, 10859)]