21993836

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{859}}^1$

素因数の和:1073

約数の個数: 24

約数和(自身を含む): 39804240

約数和(自身を除く): 17810404

約数列:

[1, 2, 4, 37, 74, 148, 173, 346, 692, 859, 1718, 3436, 6401, 12802, 25604, 31783, 63566, 127132, 148607, 297214, 594428, 5498459, 10996918, 21993836]

約数ペア:

[(1, 21993836), (2, 10996918), (4, 5498459), (37, 594428), (74, 297214), (148, 148607), (173, 127132), (346, 63566), (692, 31783), (859, 25604), (1718, 12802), (3436, 6401)]