20879478

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 48960000

約数和(自身を除く): 28080522

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 67, 87, 134, 174, 199, 201, 261, 398, 402, 522, 597, 603, 783, 1194, 1206, 1566, 1791, 1809, 1943, 3582, 3618, 3886, 5373, 5771, 5829, 10746, 11542, 11658, 13333, 17313, 17487, 26666, 34626, 34974, 39999, 51939, 52461, 79998, 103878, 104922, 119997, 155817, 239994, 311634, 359991, 386657, 719982, 773314, 1159971, 2319942, 3479913, 6959826, 10439739, 20879478]

約数ペア:

[(1, 20879478), (2, 10439739), (3, 6959826), (6, 3479913), (9, 2319942), (18, 1159971), (27, 773314), (29, 719982), (54, 386657), (58, 359991), (67, 311634), (87, 239994), (134, 155817), (174, 119997), (199, 104922), (201, 103878), (261, 79998), (398, 52461), (402, 51939), (522, 39999), (597, 34974), (603, 34626), (783, 26666), (1194, 17487), (1206, 17313), (1566, 13333), (1791, 11658), (1809, 11542), (1943, 10746), (3582, 5829), (3618, 5771), (3886, 5373)]