687584180

素因数分解:

$2^2\times 5^1\times {\mathrm{6389}}^1\times {\mathrm{5381}}^1$

素因数の和:11779

約数の個数: 24

約数和(自身を含む): 1444421160

約数和(自身を除く): 756836980

約数列:

[1, 2, 4, 5, 10, 20, 5381, 6389, 10762, 12778, 21524, 25556, 26905, 31945, 53810, 63890, 107620, 127780, 34379209, 68758418, 137516836, 171896045, 343792090, 687584180]

約数ペア:

[(1, 687584180), (2, 343792090), (4, 171896045), (5, 137516836), (10, 68758418), (20, 34379209), (5381, 127780), (6389, 107620), (10762, 63890), (12778, 53810), (21524, 31945), (25556, 26905)]