18712309

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3329}}^1$

素因数の和:3420

約数の個数: 16

約数和(自身を含む): 23656320

約数和(自身を除く): 4944011

約数列:

[1, 7, 11, 73, 77, 511, 803, 3329, 5621, 23303, 36619, 243017, 256333, 1701119, 2673187, 18712309]

約数ペア:

[(1, 18712309), (7, 2673187), (11, 1701119), (73, 256333), (77, 243017), (511, 36619), (803, 23303), (3329, 5621)]