21491928310

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{69328801}}^1$

素因数の和:69328839

約数の個数: 16

約数和(自身を含む): 39933389952

約数和(自身を除く): 18441461642

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 69328801, 138657602, 346644005, 693288010, 2149192831, 4298385662, 10745964155, 21491928310]

約数ペア:

[(1, 21491928310), (2, 10745964155), (5, 4298385662), (10, 2149192831), (31, 693288010), (62, 346644005), (155, 138657602), (310, 69328801)]