20545479400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3313787}}^1$

素因数の和:3313834

約数の個数: 48

約数和(自身を含む): 49309165440

約数和(自身を除く): 28763686040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 3313787, 6627574, 13255148, 16568935, 26510296, 33137870, 66275740, 82844675, 102727397, 132551480, 165689350, 205454794, 331378700, 410909588, 513636985, 662757400, 821819176, 1027273970, 2054547940, 2568184925, 4109095880, 5136369850, 10272739700, 20545479400]

約数ペア:

[(1, 20545479400), (2, 10272739700), (4, 5136369850), (5, 4109095880), (8, 2568184925), (10, 2054547940), (20, 1027273970), (25, 821819176), (31, 662757400), (40, 513636985), (50, 410909588), (62, 331378700), (100, 205454794), (124, 165689350), (155, 132551480), (200, 102727397), (248, 82844675), (310, 66275740), (620, 33137870), (775, 26510296), (1240, 16568935), (1550, 13255148), (3100, 6627574), (6200, 3313787)]