20392810

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 37849680

約数和(自身を除く): 17456870

約数列:

[1, 2, 5, 10, 53, 106, 109, 218, 265, 353, 530, 545, 706, 1090, 1765, 3530, 5777, 11554, 18709, 28885, 37418, 38477, 57770, 76954, 93545, 187090, 192385, 384770, 2039281, 4078562, 10196405, 20392810]

約数ペア:

[(1, 20392810), (2, 10196405), (5, 4078562), (10, 2039281), (53, 384770), (106, 192385), (109, 187090), (218, 93545), (265, 76954), (353, 57770), (530, 38477), (545, 37418), (706, 28885), (1090, 18709), (1765, 11554), (3530, 5777)]