12989456

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{19801}}^1$

素因数の和:19850

約数の個数: 20

約数和(自身を含む): 25782204

約数和(自身を除く): 12792748

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 19801, 39602, 79204, 158408, 316816, 811841, 1623682, 3247364, 6494728, 12989456]

約数ペア:

[(1, 12989456), (2, 6494728), (4, 3247364), (8, 1623682), (16, 811841), (41, 316816), (82, 158408), (164, 79204), (328, 39602), (656, 19801)]