20555465

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{193}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 30170880

約数和(自身を除く): 9615415

約数列:

[1, 5, 7, 17, 35, 85, 119, 179, 193, 595, 895, 965, 1253, 1351, 3043, 3281, 6265, 6755, 15215, 16405, 21301, 22967, 34547, 106505, 114835, 172735, 241829, 587299, 1209145, 2936495, 4111093, 20555465]

約数ペア:

[(1, 20555465), (5, 4111093), (7, 2936495), (17, 1209145), (35, 587299), (85, 241829), (119, 172735), (179, 114835), (193, 106505), (595, 34547), (895, 22967), (965, 21301), (1253, 16405), (1351, 15215), (3043, 6755), (3281, 6265)]