21367881

素因数分解:

$3^4\times {\mathrm{251}}^1\times {\mathrm{1051}}^1$

素因数の和:1314

約数の個数: 20

約数和(自身を含む): 32077584

約数和(自身を除く): 10709703

約数列:

[1, 3, 9, 27, 81, 251, 753, 1051, 2259, 3153, 6777, 9459, 20331, 28377, 85131, 263801, 791403, 2374209, 7122627, 21367881]

約数ペア:

[(1, 21367881), (3, 7122627), (9, 2374209), (27, 791403), (81, 263801), (251, 85131), (753, 28377), (1051, 20331), (2259, 9459), (3153, 6777)]