18665258

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{5519}}^1$

素因数の和:5629

約数の個数: 16

約数和(自身を含む): 29808000

約数和(自身を除く): 11142742

約数列:

[1, 2, 19, 38, 89, 178, 1691, 3382, 5519, 11038, 104861, 209722, 491191, 982382, 9332629, 18665258]

約数ペア:

[(1, 18665258), (2, 9332629), (19, 982382), (38, 491191), (89, 209722), (178, 104861), (1691, 11038), (3382, 5519)]