21125872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69493}}^1$

素因数の和:69520

約数の個数: 20

約数和(自身を含む): 43086280

約数和(自身を除く): 21960408

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69493, 138986, 277972, 555944, 1111888, 1320367, 2640734, 5281468, 10562936, 21125872]

約数ペア:

[(1, 21125872), (2, 10562936), (4, 5281468), (8, 2640734), (16, 1320367), (19, 1111888), (38, 555944), (76, 277972), (152, 138986), (304, 69493)]