18917972

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{457}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 33855360

約数和(自身を除く): 14937388

約数列:

[1, 2, 4, 79, 131, 158, 262, 316, 457, 524, 914, 1828, 10349, 20698, 36103, 41396, 59867, 72206, 119734, 144412, 239468, 4729493, 9458986, 18917972]

約数ペア:

[(1, 18917972), (2, 9458986), (4, 4729493), (79, 239468), (131, 144412), (158, 119734), (262, 72206), (316, 59867), (457, 41396), (524, 36103), (914, 20698), (1828, 10349)]