20722497

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 28292352

約数和(自身を除く): 7569855

約数列:

[1, 3, 67, 131, 201, 393, 787, 2361, 8777, 26331, 52729, 103097, 158187, 309291, 6907499, 20722497]

約数ペア:

[(1, 20722497), (3, 6907499), (67, 309291), (131, 158187), (201, 103097), (393, 52729), (787, 26331), (2361, 8777)]