20287743

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23563}}^1$

素因数の和:23614

約数の個数: 16

約数和(自身を含む): 31670016

約数和(自身を除く): 11382273

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23563, 70689, 164941, 494823, 966083, 2898249, 6762581, 20287743]

約数ペア:

[(1, 20287743), (3, 6762581), (7, 2898249), (21, 966083), (41, 494823), (123, 164941), (287, 70689), (861, 23563)]