20420478

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1531}}^1$

素因数の和:1574

約数の個数: 64

約数和(自身を含む): 51475200

約数和(自身を除く): 31054722

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 27, 38, 39, 54, 57, 78, 114, 117, 171, 234, 247, 342, 351, 494, 513, 702, 741, 1026, 1482, 1531, 2223, 3062, 4446, 4593, 6669, 9186, 13338, 13779, 19903, 27558, 29089, 39806, 41337, 58178, 59709, 82674, 87267, 119418, 174534, 179127, 261801, 358254, 378157, 523602, 537381, 756314, 785403, 1074762, 1134471, 1570806, 2268942, 3403413, 6806826, 10210239, 20420478]

約数ペア:

[(1, 20420478), (2, 10210239), (3, 6806826), (6, 3403413), (9, 2268942), (13, 1570806), (18, 1134471), (19, 1074762), (26, 785403), (27, 756314), (38, 537381), (39, 523602), (54, 378157), (57, 358254), (78, 261801), (114, 179127), (117, 174534), (171, 119418), (234, 87267), (247, 82674), (342, 59709), (351, 58178), (494, 41337), (513, 39806), (702, 29089), (741, 27558), (1026, 19903), (1482, 13779), (1531, 13338), (2223, 9186), (3062, 6669), (4446, 4593)]