81670000

素因数分解:

$2^4\times 5^4\times {\mathrm{8167}}^1$

素因数の和:8195

約数の個数: 50

約数和(自身を含む): 197755448

約数和(自身を除く): 116085448

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, 8167, 10000, 16334, 32668, 40835, 65336, 81670, 130672, 163340, 204175, 326680, 408350, 653360, 816700, 1020875, 1633400, 2041750, 3266800, 4083500, 5104375, 8167000, 10208750, 16334000, 20417500, 40835000, 81670000]

約数ペア:

[(1, 81670000), (2, 40835000), (4, 20417500), (5, 16334000), (8, 10208750), (10, 8167000), (16, 5104375), (20, 4083500), (25, 3266800), (40, 2041750), (50, 1633400), (80, 1020875), (100, 816700), (125, 653360), (200, 408350), (250, 326680), (400, 204175), (500, 163340), (625, 130672), (1000, 81670), (1250, 65336), (2000, 40835), (2500, 32668), (5000, 16334), (8167, 10000)]