21008601

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 31052736

約数和(自身を除く): 10044135

約数列:

[1, 3, 9, 103, 131, 173, 309, 393, 519, 927, 1179, 1557, 13493, 17819, 22663, 40479, 53457, 67989, 121437, 160371, 203967, 2334289, 7002867, 21008601]

約数ペア:

[(1, 21008601), (3, 7002867), (9, 2334289), (103, 203967), (131, 160371), (173, 121437), (309, 67989), (393, 53457), (519, 40479), (927, 22663), (1179, 17819), (1557, 13493)]