18565000

素因数分解:

$2^3\times 5^4\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 80

約数和(自身を含む): 44985600

約数和(自身を除く): 26420600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 79, 94, 100, 125, 158, 188, 200, 235, 250, 316, 376, 395, 470, 500, 625, 632, 790, 940, 1000, 1175, 1250, 1580, 1880, 1975, 2350, 2500, 3160, 3713, 3950, 4700, 5000, 5875, 7426, 7900, 9400, 9875, 11750, 14852, 15800, 18565, 19750, 23500, 29375, 29704, 37130, 39500, 47000, 49375, 58750, 74260, 79000, 92825, 98750, 117500, 148520, 185650, 197500, 235000, 371300, 395000, 464125, 742600, 928250, 1856500, 2320625, 3713000, 4641250, 9282500, 18565000]

約数ペア:

[(1, 18565000), (2, 9282500), (4, 4641250), (5, 3713000), (8, 2320625), (10, 1856500), (20, 928250), (25, 742600), (40, 464125), (47, 395000), (50, 371300), (79, 235000), (94, 197500), (100, 185650), (125, 148520), (158, 117500), (188, 98750), (200, 92825), (235, 79000), (250, 74260), (316, 58750), (376, 49375), (395, 47000), (470, 39500), (500, 37130), (625, 29704), (632, 29375), (790, 23500), (940, 19750), (1000, 18565), (1175, 15800), (1250, 14852), (1580, 11750), (1880, 9875), (1975, 9400), (2350, 7900), (2500, 7426), (3160, 5875), (3713, 5000), (3950, 4700)]