128515960

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{11353}}^1$

素因数の和:11647

約数の個数: 32

約数和(自身を含む): 290208240

約数和(自身を除く): 161692280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 2264, 2830, 5660, 11320, 11353, 22706, 45412, 56765, 90824, 113530, 227060, 454120, 3212899, 6425798, 12851596, 16064495, 25703192, 32128990, 64257980, 128515960]

約数ペア:

[(1, 128515960), (2, 64257980), (4, 32128990), (5, 25703192), (8, 16064495), (10, 12851596), (20, 6425798), (40, 3212899), (283, 454120), (566, 227060), (1132, 113530), (1415, 90824), (2264, 56765), (2830, 45412), (5660, 22706), (11320, 11353)]