81812540

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{17863}}^1$

素因数の和:18101

約数の個数: 24

約数和(自身を含む): 172566240

約数和(自身を除く): 90753700

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 17863, 35726, 71452, 89315, 178630, 357260, 4090627, 8181254, 16362508, 20453135, 40906270, 81812540]

約数ペア:

[(1, 81812540), (2, 40906270), (4, 20453135), (5, 16362508), (10, 8181254), (20, 4090627), (229, 357260), (458, 178630), (916, 89315), (1145, 71452), (2290, 35726), (4580, 17863)]