128665780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{59021}}^1$

素因数の和:59139

約数の個数: 24

約数和(自身を含む): 272681640

約数和(自身を除く): 144015860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 59021, 118042, 236084, 295105, 590210, 1180420, 6433289, 12866578, 25733156, 32166445, 64332890, 128665780]

約数ペア:

[(1, 128665780), (2, 64332890), (4, 32166445), (5, 25733156), (10, 12866578), (20, 6433289), (109, 1180420), (218, 590210), (436, 295105), (545, 236084), (1090, 118042), (2180, 59021)]