21953839

素因数分解:

${\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 23409216

約数和(自身を除く): 1455377

約数列:

[1, 37, 61, 71, 137, 2257, 2627, 4331, 5069, 8357, 9727, 160247, 309209, 359899, 593347, 21953839]

約数ペア:

[(1, 21953839), (37, 593347), (61, 359899), (71, 309209), (137, 160247), (2257, 9727), (2627, 8357), (4331, 5069)]