20814969

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16249}}^1$

素因数の和:16320

約数の個数: 16

約数和(自身を含む): 32240000

約数和(自身を除く): 11425031

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16249, 48747, 113743, 341229, 991189, 2973567, 6938323, 20814969]

約数ペア:

[(1, 20814969), (3, 6938323), (7, 2973567), (21, 991189), (61, 341229), (183, 113743), (427, 48747), (1281, 16249)]