18122180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10181}}^1$

素因数の和:10279

約数の個数: 24

約数和(自身を含む): 38487960

約数和(自身を除く): 20365780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10181, 20362, 40724, 50905, 101810, 203620, 906109, 1812218, 3624436, 4530545, 9061090, 18122180]

約数ペア:

[(1, 18122180), (2, 9061090), (4, 4530545), (5, 3624436), (10, 1812218), (20, 906109), (89, 203620), (178, 101810), (356, 50905), (445, 40724), (890, 20362), (1780, 10181)]