18993505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{3061}}^1$

素因数の和:3156

約数の個数: 16

約数和(自身を含む): 24471504

約数和(自身を除く): 5477999

約数列:

[1, 5, 17, 73, 85, 365, 1241, 3061, 6205, 15305, 52037, 223453, 260185, 1117265, 3798701, 18993505]

約数ペア:

[(1, 18993505), (5, 3798701), (17, 1117265), (73, 260185), (85, 223453), (365, 52037), (1241, 15305), (3061, 6205)]