81218502

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:506

約数の個数: 72

約数和(自身を含む): 192572640

約数和(自身を除く): 111354138

約数列:

[1, 2, 3, 6, 9, 18, 19, 29, 38, 57, 58, 87, 114, 171, 174, 261, 342, 361, 431, 522, 551, 722, 862, 1083, 1102, 1293, 1653, 2166, 2586, 3249, 3306, 3879, 4959, 6498, 7758, 8189, 9918, 10469, 12499, 16378, 20938, 24567, 24998, 31407, 37497, 49134, 62814, 73701, 74994, 94221, 112491, 147402, 155591, 188442, 224982, 237481, 311182, 466773, 474962, 712443, 933546, 1400319, 1424886, 2137329, 2800638, 4274658, 4512139, 9024278, 13536417, 27072834, 40609251, 81218502]

約数ペア:

[(1, 81218502), (2, 40609251), (3, 27072834), (6, 13536417), (9, 9024278), (18, 4512139), (19, 4274658), (29, 2800638), (38, 2137329), (57, 1424886), (58, 1400319), (87, 933546), (114, 712443), (171, 474962), (174, 466773), (261, 311182), (342, 237481), (361, 224982), (431, 188442), (522, 155591), (551, 147402), (722, 112491), (862, 94221), (1083, 74994), (1102, 73701), (1293, 62814), (1653, 49134), (2166, 37497), (2586, 31407), (3249, 24998), (3306, 24567), (3879, 20938), (4959, 16378), (6498, 12499), (7758, 10469), (8189, 9918)]