1664000

素因数分解:

$2^{10}\times 5^3\times {\mathrm{13}}^1$

素因数の和:48

約数の個数: 88

約数和(自身を含む): 4470648

約数和(自身を除く): 2806648

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 128, 130, 160, 200, 208, 250, 256, 260, 320, 325, 400, 416, 500, 512, 520, 640, 650, 800, 832, 1000, 1024, 1040, 1280, 1300, 1600, 1625, 1664, 2000, 2080, 2560, 2600, 3200, 3250, 3328, 4000, 4160, 5120, 5200, 6400, 6500, 6656, 8000, 8320, 10400, 12800, 13000, 13312, 16000, 16640, 20800, 25600, 26000, 32000, 33280, 41600, 52000, 64000, 66560, 83200, 104000, 128000, 166400, 208000, 332800, 416000, 832000, 1664000]

約数ペア:

[(1, 1664000), (2, 832000), (4, 416000), (5, 332800), (8, 208000), (10, 166400), (13, 128000), (16, 104000), (20, 83200), (25, 66560), (26, 64000), (32, 52000), (40, 41600), (50, 33280), (52, 32000), (64, 26000), (65, 25600), (80, 20800), (100, 16640), (104, 16000), (125, 13312), (128, 13000), (130, 12800), (160, 10400), (200, 8320), (208, 8000), (250, 6656), (256, 6500), (260, 6400), (320, 5200), (325, 5120), (400, 4160), (416, 4000), (500, 3328), (512, 3250), (520, 3200), (640, 2600), (650, 2560), (800, 2080), (832, 2000), (1000, 1664), (1024, 1625), (1040, 1600), (1280, 1300)]