21019408

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18503}}^1$

素因数の和:18582

約数の個数: 20

約数和(自身を含む): 41300928

約数和(自身を除く): 20281520

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18503, 37006, 74012, 148024, 296048, 1313713, 2627426, 5254852, 10509704, 21019408]

約数ペア:

[(1, 21019408), (2, 10509704), (4, 5254852), (8, 2627426), (16, 1313713), (71, 296048), (142, 148024), (284, 74012), (568, 37006), (1136, 18503)]