128432840

素因数分解:

$2^3\times 5^1\times {\mathrm{3210821}}^1$

素因数の和:3210832

約数の個数: 16

約数和(自身を含む): 288973980

約数和(自身を除く): 160541140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3210821, 6421642, 12843284, 16054105, 25686568, 32108210, 64216420, 128432840]

約数ペア:

[(1, 128432840), (2, 64216420), (4, 32108210), (5, 25686568), (8, 16054105), (10, 12843284), (20, 6421642), (40, 3210821)]