21067390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{110881}}^1$

素因数の和:110907

約数の個数: 16

約数和(自身を含む): 39917520

約数和(自身を除く): 18850130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 110881, 221762, 554405, 1108810, 2106739, 4213478, 10533695, 21067390]

約数ペア:

[(1, 21067390), (2, 10533695), (5, 4213478), (10, 2106739), (19, 1108810), (38, 554405), (95, 221762), (190, 110881)]