19858993

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3533}}^1$

素因数の和:3624

約数の個数: 16

約数和(自身を含む): 25105536

約数和(自身を除く): 5246543

約数列:

[1, 7, 11, 73, 77, 511, 803, 3533, 5621, 24731, 38863, 257909, 272041, 1805363, 2836999, 19858993]

約数ペア:

[(1, 19858993), (7, 2836999), (11, 1805363), (73, 272041), (77, 257909), (511, 38863), (803, 24731), (3533, 5621)]