85142020

素因数分解:

$2^2\times 5^1\times {\mathrm{4257101}}^1$

素因数の和:4257110

約数の個数: 12

約数和(自身を含む): 178798284

約数和(自身を除く): 93656264

約数列:

[1, 2, 4, 5, 10, 20, 4257101, 8514202, 17028404, 21285505, 42571010, 85142020]

約数ペア:

[(1, 85142020), (2, 42571010), (4, 21285505), (5, 17028404), (10, 8514202), (20, 4257101)]