128425280

素因数分解:

$2^6\times 5^1\times {\mathrm{401329}}^1$

素因数の和:401346

約数の個数: 28

約数和(自身を含む): 305813460

約数和(自身を除く): 177388180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 401329, 802658, 1605316, 2006645, 3210632, 4013290, 6421264, 8026580, 12842528, 16053160, 25685056, 32106320, 64212640, 128425280]

約数ペア:

[(1, 128425280), (2, 64212640), (4, 32106320), (5, 25685056), (8, 16053160), (10, 12842528), (16, 8026580), (20, 6421264), (32, 4013290), (40, 3210632), (64, 2006645), (80, 1605316), (160, 802658), (320, 401329)]