19833025

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 25704704

約数和(自身を除く): 5871679

約数列:

[1, 5, 25, 31, 155, 157, 163, 775, 785, 815, 3925, 4075, 4867, 5053, 24335, 25265, 25591, 121675, 126325, 127955, 639775, 793321, 3966605, 19833025]

約数ペア:

[(1, 19833025), (5, 3966605), (25, 793321), (31, 639775), (155, 127955), (157, 126325), (163, 121675), (775, 25591), (785, 25265), (815, 24335), (3925, 5053), (4075, 4867)]