21659289

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1\times {\mathrm{349}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 29366400

約数和(自身を除く): 7707111

約数列:

[1, 3, 137, 151, 349, 411, 453, 1047, 20687, 47813, 52699, 62061, 143439, 158097, 7219763, 21659289]

約数ペア:

[(1, 21659289), (3, 7219763), (137, 158097), (151, 143439), (349, 62061), (411, 52699), (453, 47813), (1047, 20687)]