21689529

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 30791040

約数和(自身を除く): 9101511

約数列:

[1, 3, 23, 69, 79, 173, 237, 519, 529, 1587, 1817, 3979, 5451, 11937, 13667, 41001, 41791, 91517, 125373, 274551, 314341, 943023, 7229843, 21689529]

約数ペア:

[(1, 21689529), (3, 7229843), (23, 943023), (69, 314341), (79, 274551), (173, 125373), (237, 91517), (519, 41791), (529, 41001), (1587, 13667), (1817, 11937), (3979, 5451)]