258170015

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^2\times {\mathrm{157}}^1$

素因数の和:399

約数の個数: 24

約数和(自身を含む): 324989568

約数和(自身を除く): 66819553

約数列:

[1, 5, 31, 103, 155, 157, 515, 785, 3193, 4867, 10609, 15965, 16171, 24335, 53045, 80855, 328879, 501301, 1644395, 1665613, 2506505, 8328065, 51634003, 258170015]

約数ペア:

[(1, 258170015), (5, 51634003), (31, 8328065), (103, 2506505), (155, 1665613), (157, 1644395), (515, 501301), (785, 328879), (3193, 80855), (4867, 53045), (10609, 24335), (15965, 16171)]