21996951

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{4159}}^1$

素因数の和:4246

約数の個数: 16

約数和(自身を含む): 30750720

約数和(自身を除く): 8753769

約数列:

[1, 3, 41, 43, 123, 129, 1763, 4159, 5289, 12477, 170519, 178837, 511557, 536511, 7332317, 21996951]

約数ペア:

[(1, 21996951), (3, 7332317), (41, 536511), (43, 511557), (123, 178837), (129, 170519), (1763, 12477), (4159, 5289)]