78790000

素因数分解:

$2^4\times 5^4\times {\mathrm{7879}}^1$

素因数の和:7907

約数の個数: 50

約数和(自身を含む): 190782680

約数和(自身を除く): 111992680

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, 7879, 10000, 15758, 31516, 39395, 63032, 78790, 126064, 157580, 196975, 315160, 393950, 630320, 787900, 984875, 1575800, 1969750, 3151600, 3939500, 4924375, 7879000, 9848750, 15758000, 19697500, 39395000, 78790000]

約数ペア:

[(1, 78790000), (2, 39395000), (4, 19697500), (5, 15758000), (8, 9848750), (10, 7879000), (16, 4924375), (20, 3939500), (25, 3151600), (40, 1969750), (50, 1575800), (80, 984875), (100, 787900), (125, 630320), (200, 393950), (250, 315160), (400, 196975), (500, 157580), (625, 126064), (1000, 78790), (1250, 63032), (2000, 39395), (2500, 31516), (5000, 15758), (7879, 10000)]