81110000

素因数分解:

$2^4\times 5^4\times {\mathrm{8111}}^1$

素因数の和:8139

約数の個数: 50

約数和(自身を含む): 196399632

約数和(自身を除く): 115289632

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, 8111, 10000, 16222, 32444, 40555, 64888, 81110, 129776, 162220, 202775, 324440, 405550, 648880, 811100, 1013875, 1622200, 2027750, 3244400, 4055500, 5069375, 8111000, 10138750, 16222000, 20277500, 40555000, 81110000]

約数ペア:

[(1, 81110000), (2, 40555000), (4, 20277500), (5, 16222000), (8, 10138750), (10, 8111000), (16, 5069375), (20, 4055500), (25, 3244400), (40, 2027750), (50, 1622200), (80, 1013875), (100, 811100), (125, 648880), (200, 405550), (250, 324440), (400, 202775), (500, 162220), (625, 129776), (1000, 81110), (1250, 64888), (2000, 40555), (2500, 32444), (5000, 16222), (8111, 10000)]