2080000

素因数分解:

$2^8\times 5^4\times {\mathrm{13}}^1$

素因数の和:49

約数の個数: 90

約数和(自身を含む): 5587274

約数和(自身を除く): 3507274

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, 520, 625, 640, 650, 800, 832, 1000, 1040, 1250, 1280, 1300, 1600, 1625, 1664, 2000, 2080, 2500, 2600, 3200, 3250, 3328, 4000, 4160, 5000, 5200, 6400, 6500, 8000, 8125, 8320, 10000, 10400, 13000, 16000, 16250, 16640, 20000, 20800, 26000, 32000, 32500, 40000, 41600, 52000, 65000, 80000, 83200, 104000, 130000, 160000, 208000, 260000, 416000, 520000, 1040000, 2080000]

約数ペア:

[(1, 2080000), (2, 1040000), (4, 520000), (5, 416000), (8, 260000), (10, 208000), (13, 160000), (16, 130000), (20, 104000), (25, 83200), (26, 80000), (32, 65000), (40, 52000), (50, 41600), (52, 40000), (64, 32500), (65, 32000), (80, 26000), (100, 20800), (104, 20000), (125, 16640), (128, 16250), (130, 16000), (160, 13000), (200, 10400), (208, 10000), (250, 8320), (256, 8125), (260, 8000), (320, 6500), (325, 6400), (400, 5200), (416, 5000), (500, 4160), (520, 4000), (625, 3328), (640, 3250), (650, 3200), (800, 2600), (832, 2500), (1000, 2080), (1040, 2000), (1250, 1664), (1280, 1625), (1300, 1600)]