20785135

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 30506112

約数和(自身を除く): 9720977

約数列:

[1, 5, 7, 17, 35, 85, 119, 181, 193, 595, 905, 965, 1267, 1351, 3077, 3281, 6335, 6755, 15385, 16405, 21539, 22967, 34933, 107695, 114835, 174665, 244531, 593861, 1222655, 2969305, 4157027, 20785135]

約数ペア:

[(1, 20785135), (5, 4157027), (7, 2969305), (17, 1222655), (35, 593861), (85, 244531), (119, 174665), (181, 114835), (193, 107695), (595, 34933), (905, 22967), (965, 21539), (1267, 16405), (1351, 15385), (3077, 6755), (3281, 6335)]