20891108

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{367}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 44513280

約数和(自身を除く): 23622172

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 107, 133, 214, 266, 367, 428, 532, 734, 749, 1468, 1498, 2033, 2569, 2996, 4066, 5138, 6973, 8132, 10276, 13946, 14231, 27892, 28462, 39269, 48811, 56924, 78538, 97622, 157076, 195244, 274883, 549766, 746111, 1099532, 1492222, 2984444, 5222777, 10445554, 20891108]

約数ペア:

[(1, 20891108), (2, 10445554), (4, 5222777), (7, 2984444), (14, 1492222), (19, 1099532), (28, 746111), (38, 549766), (76, 274883), (107, 195244), (133, 157076), (214, 97622), (266, 78538), (367, 56924), (428, 48811), (532, 39269), (734, 28462), (749, 27892), (1468, 14231), (1498, 13946), (2033, 10276), (2569, 8132), (2996, 6973), (4066, 5138)]