20817363

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3229}}^1$

素因数の和:3546

約数の個数: 16

約数和(自身を含む): 31834880

約数和(自身を除く): 11017517

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3229, 6447, 9687, 22603, 67809, 991303, 2973909, 6939121, 20817363]

約数ペア:

[(1, 20817363), (3, 6939121), (7, 2973909), (21, 991303), (307, 67809), (921, 22603), (2149, 9687), (3229, 6447)]