21553396991

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3618163}}^1$

素因数の和:3618230

約数の個数: 16

約数和(自身を含む): 26398124544

約数和(自身を除く): 4844727553

約数列:

[1, 7, 23, 37, 161, 259, 851, 5957, 3618163, 25327141, 83217749, 133872031, 582524243, 937104217, 3079056713, 21553396991]

約数ペア:

[(1, 21553396991), (7, 3079056713), (23, 937104217), (37, 582524243), (161, 133872031), (259, 83217749), (851, 25327141), (5957, 3618163)]