18961795

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{521}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 23677920

約数和(自身を除く): 4716125

約数列:

[1, 5, 29, 145, 251, 521, 1255, 2605, 7279, 15109, 36395, 75545, 130771, 653855, 3792359, 18961795]

約数ペア:

[(1, 18961795), (5, 3792359), (29, 653855), (145, 130771), (251, 75545), (521, 36395), (1255, 15109), (2605, 7279)]