20196520

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1877}}^1$

素因数の和:2157

約数の個数: 32

約数和(自身を含む): 45635400

約数和(自身を除く): 25438880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1877, 2152, 2690, 3754, 5380, 7508, 9385, 10760, 15016, 18770, 37540, 75080, 504913, 1009826, 2019652, 2524565, 4039304, 5049130, 10098260, 20196520]

約数ペア:

[(1, 20196520), (2, 10098260), (4, 5049130), (5, 4039304), (8, 2524565), (10, 2019652), (20, 1009826), (40, 504913), (269, 75080), (538, 37540), (1076, 18770), (1345, 15016), (1877, 10760), (2152, 9385), (2690, 7508), (3754, 5380)]