2720000

素因数分解:

$2^8\times 5^4\times {\mathrm{17}}^1$

素因数の和:53

約数の個数: 90

約数和(自身を含む): 7183638

約数和(自身を除く): 4463638

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 125, 128, 136, 160, 170, 200, 250, 256, 272, 320, 340, 400, 425, 500, 544, 625, 640, 680, 800, 850, 1000, 1088, 1250, 1280, 1360, 1600, 1700, 2000, 2125, 2176, 2500, 2720, 3200, 3400, 4000, 4250, 4352, 5000, 5440, 6400, 6800, 8000, 8500, 10000, 10625, 10880, 13600, 16000, 17000, 20000, 21250, 21760, 27200, 32000, 34000, 40000, 42500, 54400, 68000, 80000, 85000, 108800, 136000, 160000, 170000, 272000, 340000, 544000, 680000, 1360000, 2720000]

約数ペア:

[(1, 2720000), (2, 1360000), (4, 680000), (5, 544000), (8, 340000), (10, 272000), (16, 170000), (17, 160000), (20, 136000), (25, 108800), (32, 85000), (34, 80000), (40, 68000), (50, 54400), (64, 42500), (68, 40000), (80, 34000), (85, 32000), (100, 27200), (125, 21760), (128, 21250), (136, 20000), (160, 17000), (170, 16000), (200, 13600), (250, 10880), (256, 10625), (272, 10000), (320, 8500), (340, 8000), (400, 6800), (425, 6400), (500, 5440), (544, 5000), (625, 4352), (640, 4250), (680, 4000), (800, 3400), (850, 3200), (1000, 2720), (1088, 2500), (1250, 2176), (1280, 2125), (1360, 2000), (1600, 1700)]