201025820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{953}}^1$

素因数の和:1214

約数の個数: 48

約数和(自身を含む): 432734400

約数和(自身を除く): 231708580

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 199, 212, 265, 398, 530, 796, 953, 995, 1060, 1906, 1990, 3812, 3980, 4765, 9530, 10547, 19060, 21094, 42188, 50509, 52735, 101018, 105470, 189647, 202036, 210940, 252545, 379294, 505090, 758588, 948235, 1010180, 1896470, 3792940, 10051291, 20102582, 40205164, 50256455, 100512910, 201025820]

約数ペア:

[(1, 201025820), (2, 100512910), (4, 50256455), (5, 40205164), (10, 20102582), (20, 10051291), (53, 3792940), (106, 1896470), (199, 1010180), (212, 948235), (265, 758588), (398, 505090), (530, 379294), (796, 252545), (953, 210940), (995, 202036), (1060, 189647), (1906, 105470), (1990, 101018), (3812, 52735), (3980, 50509), (4765, 42188), (9530, 21094), (10547, 19060)]