78889400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{4993}}^1$

素因数の和:5088

約数の個数: 48

約数和(自身を含む): 185776800

約数和(自身を除く): 106887400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 3160, 3950, 4993, 7900, 9986, 15800, 19972, 24965, 39944, 49930, 99860, 124825, 199720, 249650, 394447, 499300, 788894, 998600, 1577788, 1972235, 3155576, 3944470, 7888940, 9861175, 15777880, 19722350, 39444700, 78889400]

約数ペア:

[(1, 78889400), (2, 39444700), (4, 19722350), (5, 15777880), (8, 9861175), (10, 7888940), (20, 3944470), (25, 3155576), (40, 1972235), (50, 1577788), (79, 998600), (100, 788894), (158, 499300), (200, 394447), (316, 249650), (395, 199720), (632, 124825), (790, 99860), (1580, 49930), (1975, 39944), (3160, 24965), (3950, 19972), (4993, 15800), (7900, 9986)]