1645000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{47}}^1$

素因数の和:80

約数の個数: 80

約数和(自身を含む): 4498560

約数和(自身を除く): 2853560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 47, 50, 56, 70, 94, 100, 125, 140, 175, 188, 200, 235, 250, 280, 329, 350, 376, 470, 500, 625, 658, 700, 875, 940, 1000, 1175, 1250, 1316, 1400, 1645, 1750, 1880, 2350, 2500, 2632, 3290, 3500, 4375, 4700, 5000, 5875, 6580, 7000, 8225, 8750, 9400, 11750, 13160, 16450, 17500, 23500, 29375, 32900, 35000, 41125, 47000, 58750, 65800, 82250, 117500, 164500, 205625, 235000, 329000, 411250, 822500, 1645000]

約数ペア:

[(1, 1645000), (2, 822500), (4, 411250), (5, 329000), (7, 235000), (8, 205625), (10, 164500), (14, 117500), (20, 82250), (25, 65800), (28, 58750), (35, 47000), (40, 41125), (47, 35000), (50, 32900), (56, 29375), (70, 23500), (94, 17500), (100, 16450), (125, 13160), (140, 11750), (175, 9400), (188, 8750), (200, 8225), (235, 7000), (250, 6580), (280, 5875), (329, 5000), (350, 4700), (376, 4375), (470, 3500), (500, 3290), (625, 2632), (658, 2500), (700, 2350), (875, 1880), (940, 1750), (1000, 1645), (1175, 1400), (1250, 1316)]