128828240

素因数分解:

$2^4\times 5^1\times {\mathrm{1610353}}^1$

素因数の和:1610366

約数の個数: 20

約数和(自身を含む): 299525844

約数和(自身を除く): 170697604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1610353, 3220706, 6441412, 8051765, 12882824, 16103530, 25765648, 32207060, 64414120, 128828240]

約数ペア:

[(1, 128828240), (2, 64414120), (4, 32207060), (5, 25765648), (8, 16103530), (10, 12882824), (16, 8051765), (20, 6441412), (40, 3220706), (80, 1610353)]