20088280

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3613}}^1$

素因数の和:3763

約数の個数: 32

約数和(自身を含む): 45536400

約数和(自身を除く): 25448120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3613, 5560, 7226, 14452, 18065, 28904, 36130, 72260, 144520, 502207, 1004414, 2008828, 2511035, 4017656, 5022070, 10044140, 20088280]

約数ペア:

[(1, 20088280), (2, 10044140), (4, 5022070), (5, 4017656), (8, 2511035), (10, 2008828), (20, 1004414), (40, 502207), (139, 144520), (278, 72260), (556, 36130), (695, 28904), (1112, 18065), (1390, 14452), (2780, 7226), (3613, 5560)]