128368840

素因数分解:

$2^3\times 5^1\times {\mathrm{3209221}}^1$

素因数の和:3209232

約数の個数: 16

約数和(自身を含む): 288829980

約数和(自身を除く): 160461140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3209221, 6418442, 12836884, 16046105, 25673768, 32092210, 64184420, 128368840]

約数ペア:

[(1, 128368840), (2, 64184420), (4, 32092210), (5, 25673768), (8, 16046105), (10, 12836884), (20, 6418442), (40, 3209221)]