20685742

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 20025938

約数列:

[1, 2, 7, 11, 14, 22, 31, 49, 62, 77, 98, 154, 217, 341, 434, 539, 619, 682, 1078, 1238, 1519, 2387, 3038, 4333, 4774, 6809, 8666, 13618, 16709, 19189, 30331, 33418, 38378, 47663, 60662, 95326, 134323, 211079, 268646, 333641, 422158, 667282, 940261, 1477553, 1880522, 2955106, 10342871, 20685742]

約数ペア:

[(1, 20685742), (2, 10342871), (7, 2955106), (11, 1880522), (14, 1477553), (22, 940261), (31, 667282), (49, 422158), (62, 333641), (77, 268646), (98, 211079), (154, 134323), (217, 95326), (341, 60662), (434, 47663), (539, 38378), (619, 33418), (682, 30331), (1078, 19189), (1238, 16709), (1519, 13618), (2387, 8666), (3038, 6809), (4333, 4774)]