397799199

素因数分解:

$3^2\times 7^2\times {\mathrm{902039}}^1$

素因数の和:902059

約数の個数: 18

約数和(自身を含む): 668411640

約数和(自身を除く): 270612441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 902039, 2706117, 6314273, 8118351, 18942819, 44199911, 56828457, 132599733, 397799199]

約数ペア:

[(1, 397799199), (3, 132599733), (7, 56828457), (9, 44199911), (21, 18942819), (49, 8118351), (63, 6314273), (147, 2706117), (441, 902039)]