20199704005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2137}}^1\times {\mathrm{4691}}^1$

素因数の和:6877

約数の個数: 32

約数和(自身を含む): 26964661248

約数和(自身を除く): 6764957243

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 2137, 4691, 10685, 23455, 27781, 60983, 66247, 138905, 145421, 304915, 331235, 727105, 861211, 1890473, 4306055, 9452365, 10024667, 50123335, 130320671, 310764677, 651603355, 1553823385, 4039940801, 20199704005]

約数ペア:

[(1, 20199704005), (5, 4039940801), (13, 1553823385), (31, 651603355), (65, 310764677), (155, 130320671), (403, 50123335), (2015, 10024667), (2137, 9452365), (4691, 4306055), (10685, 1890473), (23455, 861211), (27781, 727105), (60983, 331235), (66247, 304915), (138905, 145421)]