21806416

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{3433}}^1$

素因数の和:3838

約数の個数: 20

約数和(自身を含む): 42368692

約数和(自身を除く): 20562276

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 3433, 6352, 6866, 13732, 27464, 54928, 1362901, 2725802, 5451604, 10903208, 21806416]

約数ペア:

[(1, 21806416), (2, 10903208), (4, 5451604), (8, 2725802), (16, 1362901), (397, 54928), (794, 27464), (1588, 13732), (3176, 6866), (3433, 6352)]