20409809

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7457}}^1$

素因数の和:7504

約数の個数: 16

約数和(自身を含む): 25774848

約数和(自身を除く): 5365039

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7457, 52199, 126769, 171511, 887383, 1200577, 2915687, 20409809]

約数ペア:

[(1, 20409809), (7, 2915687), (17, 1200577), (23, 887383), (119, 171511), (161, 126769), (391, 52199), (2737, 7457)]