20914000

素因数分解:

$2^4\times 5^3\times {\mathrm{10457}}^1$

素因数の和:10480

約数の個数: 40

約数和(自身を含む): 50574888

約数和(自身を除く): 29660888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10457, 20914, 41828, 52285, 83656, 104570, 167312, 209140, 261425, 418280, 522850, 836560, 1045700, 1307125, 2091400, 2614250, 4182800, 5228500, 10457000, 20914000]

約数ペア:

[(1, 20914000), (2, 10457000), (4, 5228500), (5, 4182800), (8, 2614250), (10, 2091400), (16, 1307125), (20, 1045700), (25, 836560), (40, 522850), (50, 418280), (80, 261425), (100, 209140), (125, 167312), (200, 104570), (250, 83656), (400, 52285), (500, 41828), (1000, 20914), (2000, 10457)]