20886005

素因数分解:

$5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{523}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 29390112

約数和(自身を除く): 8504107

約数列:

[1, 5, 7, 35, 49, 163, 245, 523, 815, 1141, 2615, 3661, 5705, 7987, 18305, 25627, 39935, 85249, 128135, 426245, 596743, 2983715, 4177201, 20886005]

約数ペア:

[(1, 20886005), (5, 4177201), (7, 2983715), (35, 596743), (49, 426245), (163, 128135), (245, 85249), (523, 39935), (815, 25627), (1141, 18305), (2615, 7987), (3661, 5705)]