20078305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2999}}^1$

素因数の和:3120

約数の個数: 16

約数和(自身を含む): 26208000

約数和(自身を除く): 6129695

約数列:

[1, 5, 13, 65, 103, 515, 1339, 2999, 6695, 14995, 38987, 194935, 308897, 1544485, 4015661, 20078305]

約数ペア:

[(1, 20078305), (5, 4015661), (13, 1544485), (65, 308897), (103, 194935), (515, 38987), (1339, 14995), (2999, 6695)]