12687620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{571}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 29405376

約数和(自身を除く): 16717756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 571, 1010, 1111, 1142, 2020, 2222, 2284, 2855, 4444, 5555, 5710, 6281, 11110, 11420, 12562, 22220, 25124, 31405, 57671, 62810, 115342, 125620, 230684, 288355, 576710, 634381, 1153420, 1268762, 2537524, 3171905, 6343810, 12687620]

約数ペア:

[(1, 12687620), (2, 6343810), (4, 3171905), (5, 2537524), (10, 1268762), (11, 1153420), (20, 634381), (22, 576710), (44, 288355), (55, 230684), (101, 125620), (110, 115342), (202, 62810), (220, 57671), (404, 31405), (505, 25124), (571, 22220), (1010, 12562), (1111, 11420), (1142, 11110), (2020, 6281), (2222, 5710), (2284, 5555), (2855, 4444)]