21130090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111211}}^1$

素因数の和:111237

約数の個数: 16

約数和(自身を含む): 40036320

約数和(自身を除く): 18906230

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111211, 222422, 556055, 1112110, 2113009, 4226018, 10565045, 21130090]

約数ペア:

[(1, 21130090), (2, 10565045), (5, 4226018), (10, 2113009), (19, 1112110), (38, 556055), (95, 222422), (190, 111211)]