520640000

素因数分解:

$2^9\times 5^4\times {\mathrm{1627}}^1$

素因数の和:1665

約数の個数: 100

約数和(自身を含む): 1300711764

約数和(自身を除く): 780071764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1250, 1280, 1600, 1627, 2000, 2500, 2560, 3200, 3254, 4000, 5000, 6400, 6508, 8000, 8135, 10000, 12800, 13016, 16000, 16270, 20000, 26032, 32000, 32540, 40000, 40675, 52064, 64000, 65080, 80000, 81350, 104128, 130160, 160000, 162700, 203375, 208256, 260320, 320000, 325400, 406750, 416512, 520640, 650800, 813500, 833024, 1016875, 1041280, 1301600, 1627000, 2033750, 2082560, 2603200, 3254000, 4067500, 4165120, 5206400, 6508000, 8135000, 10412800, 13016000, 16270000, 20825600, 26032000, 32540000, 52064000, 65080000, 104128000, 130160000, 260320000, 520640000]

約数ペア:

[(1, 520640000), (2, 260320000), (4, 130160000), (5, 104128000), (8, 65080000), (10, 52064000), (16, 32540000), (20, 26032000), (25, 20825600), (32, 16270000), (40, 13016000), (50, 10412800), (64, 8135000), (80, 6508000), (100, 5206400), (125, 4165120), (128, 4067500), (160, 3254000), (200, 2603200), (250, 2082560), (256, 2033750), (320, 1627000), (400, 1301600), (500, 1041280), (512, 1016875), (625, 833024), (640, 813500), (800, 650800), (1000, 520640), (1250, 416512), (1280, 406750), (1600, 325400), (1627, 320000), (2000, 260320), (2500, 208256), (2560, 203375), (3200, 162700), (3254, 160000), (4000, 130160), (5000, 104128), (6400, 81350), (6508, 80000), (8000, 65080), (8135, 64000), (10000, 52064), (12800, 40675), (13016, 40000), (16000, 32540), (16270, 32000), (20000, 26032)]