128410280

素因数分解:

$2^3\times 5^1\times {\mathrm{3210257}}^1$

素因数の和:3210268

約数の個数: 16

約数和(自身を含む): 288923220

約数和(自身を除く): 160512940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3210257, 6420514, 12841028, 16051285, 25682056, 32102570, 64205140, 128410280]

約数ペア:

[(1, 128410280), (2, 64205140), (4, 32102570), (5, 25682056), (8, 16051285), (10, 12841028), (20, 6420514), (40, 3210257)]