129438560

素因数分解:

$2^5\times 5^1\times {\mathrm{808991}}^1$

素因数の和:809006

約数の個数: 24

約数和(自身を含む): 305798976

約数和(自身を除く): 176360416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 808991, 1617982, 3235964, 4044955, 6471928, 8089910, 12943856, 16179820, 25887712, 32359640, 64719280, 129438560]

約数ペア:

[(1, 129438560), (2, 64719280), (4, 32359640), (5, 25887712), (8, 16179820), (10, 12943856), (16, 8089910), (20, 6471928), (32, 4044955), (40, 3235964), (80, 1617982), (160, 808991)]