18120011

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 36

約数和(自身を含む): 24270192

約数和(自身を除く): 6150181

約数列:

[1, 7, 13, 17, 53, 91, 119, 169, 221, 289, 371, 689, 901, 1183, 1547, 2023, 2873, 3757, 4823, 6307, 8957, 11713, 15317, 20111, 26299, 48841, 62699, 81991, 107219, 152269, 199121, 341887, 1065883, 1393847, 2588573, 18120011]

約数ペア:

[(1, 18120011), (7, 2588573), (13, 1393847), (17, 1065883), (53, 341887), (91, 199121), (119, 152269), (169, 107219), (221, 81991), (289, 62699), (371, 48841), (689, 26299), (901, 20111), (1183, 15317), (1547, 11713), (2023, 8957), (2873, 6307), (3757, 4823)]