21817278

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{347}}^1\times {\mathrm{499}}^1$

素因数の和:861

約数の個数: 48

約数和(自身を含む): 54288000

約数和(自身を除く): 32470722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 347, 499, 694, 998, 1041, 1497, 2082, 2429, 2994, 3123, 3493, 4491, 4858, 6246, 6986, 7287, 8982, 10479, 14574, 20958, 21861, 31437, 43722, 62874, 173153, 346306, 519459, 1038918, 1212071, 1558377, 2424142, 3116754, 3636213, 7272426, 10908639, 21817278]

約数ペア:

[(1, 21817278), (2, 10908639), (3, 7272426), (6, 3636213), (7, 3116754), (9, 2424142), (14, 1558377), (18, 1212071), (21, 1038918), (42, 519459), (63, 346306), (126, 173153), (347, 62874), (499, 43722), (694, 31437), (998, 21861), (1041, 20958), (1497, 14574), (2082, 10479), (2429, 8982), (2994, 7287), (3123, 6986), (3493, 6246), (4491, 4858)]