21523278

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 30731442

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 41, 42, 58, 82, 87, 123, 174, 203, 246, 287, 406, 431, 574, 609, 861, 862, 1189, 1218, 1293, 1722, 2378, 2586, 3017, 3567, 6034, 7134, 8323, 9051, 12499, 16646, 17671, 18102, 24969, 24998, 35342, 37497, 49938, 53013, 74994, 87493, 106026, 123697, 174986, 247394, 262479, 371091, 512459, 524958, 742182, 1024918, 1537377, 3074754, 3587213, 7174426, 10761639, 21523278]

約数ペア:

[(1, 21523278), (2, 10761639), (3, 7174426), (6, 3587213), (7, 3074754), (14, 1537377), (21, 1024918), (29, 742182), (41, 524958), (42, 512459), (58, 371091), (82, 262479), (87, 247394), (123, 174986), (174, 123697), (203, 106026), (246, 87493), (287, 74994), (406, 53013), (431, 49938), (574, 37497), (609, 35342), (861, 24998), (862, 24969), (1189, 18102), (1218, 17671), (1293, 16646), (1722, 12499), (2378, 9051), (2586, 8323), (3017, 7134), (3567, 6034)]