21277771109

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{552971}}^1$

素因数の和:553240

約数の個数: 16

約数和(自身を含む): 25480949760

約数和(自身を除く): 4203178651

約数列:

[1, 7, 23, 161, 239, 1673, 5497, 38479, 552971, 3870797, 12718333, 89028331, 132160069, 925120483, 3039681587, 21277771109]

約数ペア:

[(1, 21277771109), (7, 3039681587), (23, 925120483), (161, 132160069), (239, 89028331), (1673, 12718333), (5497, 3870797), (38479, 552971)]