81885712

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{64783}}^1$

素因数の和:64870

約数の個数: 20

約数和(自身を含む): 160664320

約数和(自身を除く): 78778608

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 64783, 129566, 259132, 518264, 1036528, 5117857, 10235714, 20471428, 40942856, 81885712]

約数ペア:

[(1, 81885712), (2, 40942856), (4, 20471428), (8, 10235714), (16, 5117857), (79, 1036528), (158, 518264), (316, 259132), (632, 129566), (1264, 64783)]