20561645

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2309}}^1$

素因数の和:2464

約数の個数: 16

約数和(自身を含む): 26777520

約数和(自身を除く): 6215875

約数列:

[1, 5, 13, 65, 137, 685, 1781, 2309, 8905, 11545, 30017, 150085, 316333, 1581665, 4112329, 20561645]

約数ペア:

[(1, 20561645), (5, 4112329), (13, 1581665), (65, 316333), (137, 150085), (685, 30017), (1781, 11545), (2309, 8905)]