21704991

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 37997568

約数和(自身を除く): 16292577

約数列:

[1, 3, 7, 11, 21, 31, 33, 49, 77, 93, 147, 217, 231, 341, 433, 539, 651, 1023, 1299, 1519, 1617, 2387, 3031, 4557, 4763, 7161, 9093, 13423, 14289, 16709, 21217, 33341, 40269, 50127, 63651, 93961, 100023, 147653, 233387, 281883, 442959, 657727, 700161, 1033571, 1973181, 3100713, 7234997, 21704991]

約数ペア:

[(1, 21704991), (3, 7234997), (7, 3100713), (11, 1973181), (21, 1033571), (31, 700161), (33, 657727), (49, 442959), (77, 281883), (93, 233387), (147, 147653), (217, 100023), (231, 93961), (341, 63651), (433, 50127), (539, 40269), (651, 33341), (1023, 21217), (1299, 16709), (1519, 14289), (1617, 13423), (2387, 9093), (3031, 7161), (4557, 4763)]