20346025

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{977}}^1$

素因数の和:1018

約数の個数: 36

約数和(自身を含む): 31106268

約数和(自身を除く): 10760243

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 977, 1225, 2975, 4165, 4885, 6839, 16609, 20825, 24425, 34195, 47873, 83045, 116263, 170975, 239365, 415225, 581315, 813841, 1196825, 2906575, 4069205, 20346025]

約数ペア:

[(1, 20346025), (5, 4069205), (7, 2906575), (17, 1196825), (25, 813841), (35, 581315), (49, 415225), (85, 239365), (119, 170975), (175, 116263), (245, 83045), (425, 47873), (595, 34195), (833, 24425), (977, 20825), (1225, 16609), (2975, 6839), (4165, 4885)]