21258188

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1289}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 46233600

約数和(自身を除く): 24975412

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 62, 76, 124, 133, 217, 266, 434, 532, 589, 868, 1178, 1289, 2356, 2578, 4123, 5156, 8246, 9023, 16492, 18046, 24491, 36092, 39959, 48982, 79918, 97964, 159836, 171437, 279713, 342874, 559426, 685748, 759221, 1118852, 1518442, 3036884, 5314547, 10629094, 21258188]

約数ペア:

[(1, 21258188), (2, 10629094), (4, 5314547), (7, 3036884), (14, 1518442), (19, 1118852), (28, 759221), (31, 685748), (38, 559426), (62, 342874), (76, 279713), (124, 171437), (133, 159836), (217, 97964), (266, 79918), (434, 48982), (532, 39959), (589, 36092), (868, 24491), (1178, 18046), (1289, 16492), (2356, 9023), (2578, 8246), (4123, 5156)]