81333020

素因数分解:

$2^2\times 5^1\times {\mathrm{1831}}^1\times {\mathrm{2221}}^1$

素因数の和:4061

約数の個数: 24

約数和(自身を含む): 170969568

約数和(自身を除く): 89636548

約数列:

[1, 2, 4, 5, 10, 20, 1831, 2221, 3662, 4442, 7324, 8884, 9155, 11105, 18310, 22210, 36620, 44420, 4066651, 8133302, 16266604, 20333255, 40666510, 81333020]

約数ペア:

[(1, 81333020), (2, 40666510), (4, 20333255), (5, 16266604), (10, 8133302), (20, 4066651), (1831, 44420), (2221, 36620), (3662, 22210), (4442, 18310), (7324, 11105), (8884, 9155)]