21447713

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1231}}^1$

素因数の和:1388

約数の個数: 16

約数和(自身を含む): 26019840

約数和(自身を除く): 4572127

約数列:

[1, 7, 19, 131, 133, 917, 1231, 2489, 8617, 17423, 23389, 161261, 163723, 1128827, 3063959, 21447713]

約数ペア:

[(1, 21447713), (7, 3063959), (19, 1128827), (131, 163723), (133, 161261), (917, 23389), (1231, 17423), (2489, 8617)]