20047559

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 24053760

約数和(自身を除く): 4006201

約数列:

[1, 7, 23, 161, 239, 521, 1673, 3647, 5497, 11983, 38479, 83881, 124519, 871633, 2863937, 20047559]

約数ペア:

[(1, 20047559), (7, 2863937), (23, 871633), (161, 124519), (239, 83881), (521, 38479), (1673, 11983), (3647, 5497)]