21782949

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{173}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 31417440

約数和(自身を除く): 9634491

約数列:

[1, 3, 19, 47, 57, 141, 173, 519, 893, 2209, 2679, 3287, 6627, 8131, 9861, 24393, 41971, 125913, 154489, 382157, 463467, 1146471, 7260983, 21782949]

約数ペア:

[(1, 21782949), (3, 7260983), (19, 1146471), (47, 463467), (57, 382157), (141, 154489), (173, 125913), (519, 41971), (893, 24393), (2209, 9861), (2679, 8131), (3287, 6627)]