16972497

素因数分解:

$3^4\times {\mathrm{317}}^1\times {\mathrm{661}}^1$

素因数の和:990

約数の個数: 20

約数和(自身を含む): 25472436

約数和(自身を除く): 8499939

約数列:

[1, 3, 9, 27, 81, 317, 661, 951, 1983, 2853, 5949, 8559, 17847, 25677, 53541, 209537, 628611, 1885833, 5657499, 16972497]

約数ペア:

[(1, 16972497), (3, 5657499), (9, 1885833), (27, 628611), (81, 209537), (317, 53541), (661, 25677), (951, 17847), (1983, 8559), (2853, 5949)]