680000

素因数分解:

$2^6\times 5^4\times {\mathrm{17}}^1$

素因数の和:49

約数の個数: 70

約数和(自身を含む): 1785366

約数和(自身を除く): 1105366

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 125, 136, 160, 170, 200, 250, 272, 320, 340, 400, 425, 500, 544, 625, 680, 800, 850, 1000, 1088, 1250, 1360, 1600, 1700, 2000, 2125, 2500, 2720, 3400, 4000, 4250, 5000, 5440, 6800, 8000, 8500, 10000, 10625, 13600, 17000, 20000, 21250, 27200, 34000, 40000, 42500, 68000, 85000, 136000, 170000, 340000, 680000]

約数ペア:

[(1, 680000), (2, 340000), (4, 170000), (5, 136000), (8, 85000), (10, 68000), (16, 42500), (17, 40000), (20, 34000), (25, 27200), (32, 21250), (34, 20000), (40, 17000), (50, 13600), (64, 10625), (68, 10000), (80, 8500), (85, 8000), (100, 6800), (125, 5440), (136, 5000), (160, 4250), (170, 4000), (200, 3400), (250, 2720), (272, 2500), (320, 2125), (340, 2000), (400, 1700), (425, 1600), (500, 1360), (544, 1250), (625, 1088), (680, 1000), (800, 850)]