20890005

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{48023}}^1$

素因数の和:48060

約数の個数: 16

約数和(自身を含む): 34577280

約数和(自身を除く): 13687275

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 48023, 144069, 240115, 720345, 1392667, 4178001, 6963335, 20890005]

約数ペア:

[(1, 20890005), (3, 6963335), (5, 4178001), (15, 1392667), (29, 720345), (87, 240115), (145, 144069), (435, 48023)]