389701809

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{20149}}^1$

素因数の和:20469

約数の個数: 24

約数和(自身を含む): 645444800

約数和(自身を除く): 255742991

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 2149, 2763, 6447, 19341, 20149, 60447, 141043, 181341, 423129, 1269387, 6185743, 18557229, 43300201, 55671687, 129900603, 389701809]

約数ペア:

[(1, 389701809), (3, 129900603), (7, 55671687), (9, 43300201), (21, 18557229), (63, 6185743), (307, 1269387), (921, 423129), (2149, 181341), (2763, 141043), (6447, 60447), (19341, 20149)]