81170000

素因数分解:

$2^4\times 5^4\times {\mathrm{8117}}^1$

素因数の和:8145

約数の個数: 50

約数和(自身を含む): 196544898

約数和(自身を除く): 115374898

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 8117, 10000, 16234, 32468, 40585, 64936, 81170, 129872, 162340, 202925, 324680, 405850, 649360, 811700, 1014625, 1623400, 2029250, 3246800, 4058500, 5073125, 8117000, 10146250, 16234000, 20292500, 40585000, 81170000]

約数ペア:

[(1, 81170000), (2, 40585000), (4, 20292500), (5, 16234000), (8, 10146250), (10, 8117000), (16, 5073125), (20, 4058500), (25, 3246800), (40, 2029250), (50, 1623400), (80, 1014625), (100, 811700), (125, 649360), (200, 405850), (250, 324680), (400, 202925), (500, 162340), (625, 129872), (1000, 81170), (1250, 64936), (2000, 40585), (2500, 32468), (5000, 16234), (8117, 10000)]