18181212

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2143}}^1$

素因数の和:2258

約数の個数: 48

約数和(自身を含む): 48986112

約数和(自身を除く): 30804900

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 101, 202, 303, 404, 606, 707, 1212, 1414, 2121, 2143, 2828, 4242, 4286, 6429, 8484, 8572, 12858, 15001, 25716, 30002, 45003, 60004, 90006, 180012, 216443, 432886, 649329, 865772, 1298658, 1515101, 2597316, 3030202, 4545303, 6060404, 9090606, 18181212]

約数ペア:

[(1, 18181212), (2, 9090606), (3, 6060404), (4, 4545303), (6, 3030202), (7, 2597316), (12, 1515101), (14, 1298658), (21, 865772), (28, 649329), (42, 432886), (84, 216443), (101, 180012), (202, 90006), (303, 60004), (404, 45003), (606, 30002), (707, 25716), (1212, 15001), (1414, 12858), (2121, 8572), (2143, 8484), (2828, 6429), (4242, 4286)]