128778489

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{30509}}^1$

素因数の和:30589

約数の個数: 24

約数和(自身を含む): 215766720

約数和(自身を除く): 86988231

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 30509, 91527, 213563, 274581, 640689, 1922067, 2044103, 6132309, 14308721, 18396927, 42926163, 128778489]

約数ペア:

[(1, 128778489), (3, 42926163), (7, 18396927), (9, 14308721), (21, 6132309), (63, 2044103), (67, 1922067), (201, 640689), (469, 274581), (603, 213563), (1407, 91527), (4221, 30509)]