78151280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4909}}^1$

素因数の和:5121

約数の個数: 40

約数和(自身を含む): 182652000

約数和(自身を除く): 104500720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 4909, 7960, 9818, 15920, 19636, 24545, 39272, 49090, 78544, 98180, 196360, 392720, 976891, 1953782, 3907564, 4884455, 7815128, 9768910, 15630256, 19537820, 39075640, 78151280]

約数ペア:

[(1, 78151280), (2, 39075640), (4, 19537820), (5, 15630256), (8, 9768910), (10, 7815128), (16, 4884455), (20, 3907564), (40, 1953782), (80, 976891), (199, 392720), (398, 196360), (796, 98180), (995, 78544), (1592, 49090), (1990, 39272), (3184, 24545), (3980, 19636), (4909, 15920), (7960, 9818)]