20989745

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{14627}}^1$

素因数の和:14680

約数の個数: 16

約数和(自身を含む): 29490048

約数和(自身を除く): 8500303

約数列:

[1, 5, 7, 35, 41, 205, 287, 1435, 14627, 73135, 102389, 511945, 599707, 2998535, 4197949, 20989745]

約数ペア:

[(1, 20989745), (5, 4197949), (7, 2998535), (35, 599707), (41, 511945), (205, 102389), (287, 73135), (1435, 14627)]