20955400

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3613}}^1$

素因数の和:3658

約数の個数: 48

約数和(自身を含む): 50415300

約数和(自身を除く): 29459900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3613, 5800, 7226, 14452, 18065, 28904, 36130, 72260, 90325, 104777, 144520, 180650, 209554, 361300, 419108, 523885, 722600, 838216, 1047770, 2095540, 2619425, 4191080, 5238850, 10477700, 20955400]

約数ペア:

[(1, 20955400), (2, 10477700), (4, 5238850), (5, 4191080), (8, 2619425), (10, 2095540), (20, 1047770), (25, 838216), (29, 722600), (40, 523885), (50, 419108), (58, 361300), (100, 209554), (116, 180650), (145, 144520), (200, 104777), (232, 90325), (290, 72260), (580, 36130), (725, 28904), (1160, 18065), (1450, 14452), (2900, 7226), (3613, 5800)]