28912821

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{13367}}^1$

素因数の和:13480

約数の個数: 16

約数和(自身を含む): 44488704

約数和(自身を除く): 15575883

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 13367, 40101, 93569, 280707, 1376801, 4130403, 9637607, 28912821]

約数ペア:

[(1, 28912821), (3, 9637607), (7, 4130403), (21, 1376801), (103, 280707), (309, 93569), (721, 40101), (2163, 13367)]