21548336

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9689}}^1$

素因数の和:9836

約数の個数: 20

約数和(自身を含む): 42054600

約数和(自身を除く): 20506264

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9689, 19378, 38756, 77512, 155024, 1346771, 2693542, 5387084, 10774168, 21548336]

約数ペア:

[(1, 21548336), (2, 10774168), (4, 5387084), (8, 2693542), (16, 1346771), (139, 155024), (278, 77512), (556, 38756), (1112, 19378), (2224, 9689)]