1999262180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1123181}}^1$

素因数の和:1123279

約数の個数: 24

約数和(自身を含む): 4245627960

約数和(自身を除く): 2246365780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 1123181, 2246362, 4492724, 5615905, 11231810, 22463620, 99963109, 199926218, 399852436, 499815545, 999631090, 1999262180]

約数ペア:

[(1, 1999262180), (2, 999631090), (4, 499815545), (5, 399852436), (10, 199926218), (20, 99963109), (89, 22463620), (178, 11231810), (356, 5615905), (445, 4492724), (890, 2246362), (1780, 1123181)]