20881525

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7019}}^1$

素因数の和:7053

約数の個数: 24

約数和(自身を含む): 31337280

約数和(自身を除く): 10455755

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 7019, 35095, 49133, 119323, 175475, 245665, 596615, 835261, 1228325, 2983075, 4176305, 20881525]

約数ペア:

[(1, 20881525), (5, 4176305), (7, 2983075), (17, 1228325), (25, 835261), (35, 596615), (85, 245665), (119, 175475), (175, 119323), (425, 49133), (595, 35095), (2975, 7019)]