128933360

素因数分解:

$2^4\times 5^1\times {\mathrm{1611667}}^1$

素因数の和:1611680

約数の個数: 20

約数和(自身を含む): 299770248

約数和(自身を除く): 170836888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1611667, 3223334, 6446668, 8058335, 12893336, 16116670, 25786672, 32233340, 64466680, 128933360]

約数ペア:

[(1, 128933360), (2, 64466680), (4, 32233340), (5, 25786672), (8, 16116670), (10, 12893336), (16, 8058335), (20, 6446668), (40, 3223334), (80, 1611667)]