21976029

素因数分解:

$3^4\times {\mathrm{97}}^1\times {\mathrm{2797}}^1$

素因数の和:2906

約数の個数: 20

約数和(自身を含む): 33178684

約数和(自身を除く): 11202655

約数列:

[1, 3, 9, 27, 81, 97, 291, 873, 2619, 2797, 7857, 8391, 25173, 75519, 226557, 271309, 813927, 2441781, 7325343, 21976029]

約数ペア:

[(1, 21976029), (3, 7325343), (9, 2441781), (27, 813927), (81, 271309), (97, 226557), (291, 75519), (873, 25173), (2619, 8391), (2797, 7857)]