18804988

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{523}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 33672240

約数和(自身を除く): 14867252

約数列:

[1, 2, 4, 89, 101, 178, 202, 356, 404, 523, 1046, 2092, 8989, 17978, 35956, 46547, 52823, 93094, 105646, 186188, 211292, 4701247, 9402494, 18804988]

約数ペア:

[(1, 18804988), (2, 9402494), (4, 4701247), (89, 211292), (101, 186188), (178, 105646), (202, 93094), (356, 52823), (404, 46547), (523, 35956), (1046, 17978), (2092, 8989)]