21259746

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{6907}}^1$

素因数の和:6940

約数の個数: 40

約数和(自身を含む): 50152080

約数和(自身を除く): 28892334

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 342, 513, 1026, 1539, 3078, 6907, 13814, 20721, 41442, 62163, 124326, 131233, 186489, 262466, 372978, 393699, 559467, 787398, 1118934, 1181097, 2362194, 3543291, 7086582, 10629873, 21259746]

約数ペア:

[(1, 21259746), (2, 10629873), (3, 7086582), (6, 3543291), (9, 2362194), (18, 1181097), (19, 1118934), (27, 787398), (38, 559467), (54, 393699), (57, 372978), (81, 262466), (114, 186489), (162, 131233), (171, 124326), (342, 62163), (513, 41442), (1026, 20721), (1539, 13814), (3078, 6907)]