21849895

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1009}}^1$

素因数の和:1146

約数の個数: 16

約数和(自身を含む): 27051840

約数和(自身を除く): 5201945

約数列:

[1, 5, 61, 71, 305, 355, 1009, 4331, 5045, 21655, 61549, 71639, 307745, 358195, 4369979, 21849895]

約数ペア:

[(1, 21849895), (5, 4369979), (61, 358195), (71, 307745), (305, 71639), (355, 61549), (1009, 21655), (4331, 5045)]