20781012

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{247393}}^1$

素因数の和:247407

約数の個数: 24

約数和(自身を含む): 55416256

約数和(自身を除く): 34635244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 247393, 494786, 742179, 989572, 1484358, 1731751, 2968716, 3463502, 5195253, 6927004, 10390506, 20781012]

約数ペア:

[(1, 20781012), (2, 10390506), (3, 6927004), (4, 5195253), (6, 3463502), (7, 2968716), (12, 1731751), (14, 1484358), (21, 989572), (28, 742179), (42, 494786), (84, 247393)]