21559804

素因数分解:

$2^2\times 7^2\times {\mathrm{317}}^1\times {\mathrm{347}}^1$

素因数の和:682

約数の個数: 36

約数和(自身を含む): 44154936

約数和(自身を除く): 22595132

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 317, 347, 634, 694, 1268, 1388, 2219, 2429, 4438, 4858, 8876, 9716, 15533, 17003, 31066, 34006, 62132, 68012, 109999, 219998, 439996, 769993, 1539986, 3079972, 5389951, 10779902, 21559804]

約数ペア:

[(1, 21559804), (2, 10779902), (4, 5389951), (7, 3079972), (14, 1539986), (28, 769993), (49, 439996), (98, 219998), (196, 109999), (317, 68012), (347, 62132), (634, 34006), (694, 31066), (1268, 17003), (1388, 15533), (2219, 9716), (2429, 8876), (4438, 4858)]