21988206

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:798

約数の個数: 64

約数和(自身を含む): 53280000

約数和(自身を除く): 31291794

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 29, 38, 54, 57, 58, 87, 114, 171, 174, 261, 342, 513, 522, 551, 739, 783, 1026, 1102, 1478, 1566, 1653, 2217, 3306, 4434, 4959, 6651, 9918, 13302, 14041, 14877, 19953, 21431, 28082, 29754, 39906, 42123, 42862, 64293, 84246, 126369, 128586, 192879, 252738, 379107, 385758, 407189, 578637, 758214, 814378, 1157274, 1221567, 2443134, 3664701, 7329402, 10994103, 21988206]

約数ペア:

[(1, 21988206), (2, 10994103), (3, 7329402), (6, 3664701), (9, 2443134), (18, 1221567), (19, 1157274), (27, 814378), (29, 758214), (38, 578637), (54, 407189), (57, 385758), (58, 379107), (87, 252738), (114, 192879), (171, 128586), (174, 126369), (261, 84246), (342, 64293), (513, 42862), (522, 42123), (551, 39906), (739, 29754), (783, 28082), (1026, 21431), (1102, 19953), (1478, 14877), (1566, 14041), (1653, 13302), (2217, 9918), (3306, 6651), (4434, 4959)]