20150500

素因数分解:

$2^2\times 5^3\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 44448768

約数和(自身を除く): 24298268

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 191, 211, 250, 382, 422, 500, 764, 844, 955, 1055, 1910, 2110, 3820, 4220, 4775, 5275, 9550, 10550, 19100, 21100, 23875, 26375, 40301, 47750, 52750, 80602, 95500, 105500, 161204, 201505, 403010, 806020, 1007525, 2015050, 4030100, 5037625, 10075250, 20150500]

約数ペア:

[(1, 20150500), (2, 10075250), (4, 5037625), (5, 4030100), (10, 2015050), (20, 1007525), (25, 806020), (50, 403010), (100, 201505), (125, 161204), (191, 105500), (211, 95500), (250, 80602), (382, 52750), (422, 47750), (500, 40301), (764, 26375), (844, 23875), (955, 21100), (1055, 19100), (1910, 10550), (2110, 9550), (3820, 5275), (4220, 4775)]