21724718

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1609}}^1$

素因数の和:1811

約数の個数: 16

約数和(自身を含む): 33578160

約数和(自身を除く): 11853442

約数列:

[1, 2, 43, 86, 157, 314, 1609, 3218, 6751, 13502, 69187, 138374, 252613, 505226, 10862359, 21724718]

約数ペア:

[(1, 21724718), (2, 10862359), (43, 505226), (86, 252613), (157, 138374), (314, 69187), (1609, 13502), (3218, 6751)]