20921241625

素因数分解:

$5^3\times {\mathrm{29}}^2\times {\mathrm{71}}^1\times {\mathrm{2803}}^1$

素因数の和:2947

約数の個数: 48

約数和(自身を含む): 27431733888

約数和(自身を除く): 6510492263

約数列:

[1, 5, 25, 29, 71, 125, 145, 355, 725, 841, 1775, 2059, 2803, 3625, 4205, 8875, 10295, 14015, 21025, 51475, 59711, 70075, 81287, 105125, 199013, 257375, 298555, 350375, 406435, 995065, 1492775, 2032175, 2357323, 4975325, 5771377, 7463875, 10160875, 11786615, 24876625, 28856885, 58933075, 144284425, 167369933, 294665375, 721422125, 836849665, 4184248325, 20921241625]

約数ペア:

[(1, 20921241625), (5, 4184248325), (25, 836849665), (29, 721422125), (71, 294665375), (125, 167369933), (145, 144284425), (355, 58933075), (725, 28856885), (841, 24876625), (1775, 11786615), (2059, 10160875), (2803, 7463875), (3625, 5771377), (4205, 4975325), (8875, 2357323), (10295, 2032175), (14015, 1492775), (21025, 995065), (51475, 406435), (59711, 350375), (70075, 298555), (81287, 257375), (105125, 199013)]