20391831

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{2707}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 31542784

約数和(自身を除く): 11150953

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 837, 2511, 2707, 7533, 8121, 24363, 73089, 83917, 219267, 251751, 657801, 755253, 2265759, 6797277, 20391831]

約数ペア:

[(1, 20391831), (3, 6797277), (9, 2265759), (27, 755253), (31, 657801), (81, 251751), (93, 219267), (243, 83917), (279, 73089), (837, 24363), (2511, 8121), (2707, 7533)]