20516713

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 25895808

約数和(自身を除く): 5379095

約数列:

[1, 7, 19, 23, 133, 161, 353, 361, 437, 2471, 2527, 3059, 6707, 8119, 8303, 46949, 56833, 58121, 127433, 154261, 892031, 1079827, 2930959, 20516713]

約数ペア:

[(1, 20516713), (7, 2930959), (19, 1079827), (23, 892031), (133, 154261), (161, 127433), (353, 58121), (361, 56833), (437, 46949), (2471, 8303), (2527, 8119), (3059, 6707)]