28640000

素因数分解:

$2^8\times 5^4\times {\mathrm{179}}^1$

素因数の和:215

約数の個数: 90

約数和(自身を含む): 71836380

約数和(自身を除く): 43196380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 179, 200, 250, 256, 320, 358, 400, 500, 625, 640, 716, 800, 895, 1000, 1250, 1280, 1432, 1600, 1790, 2000, 2500, 2864, 3200, 3580, 4000, 4475, 5000, 5728, 6400, 7160, 8000, 8950, 10000, 11456, 14320, 16000, 17900, 20000, 22375, 22912, 28640, 32000, 35800, 40000, 44750, 45824, 57280, 71600, 80000, 89500, 111875, 114560, 143200, 160000, 179000, 223750, 229120, 286400, 358000, 447500, 572800, 716000, 895000, 1145600, 1432000, 1790000, 2864000, 3580000, 5728000, 7160000, 14320000, 28640000]

約数ペア:

[(1, 28640000), (2, 14320000), (4, 7160000), (5, 5728000), (8, 3580000), (10, 2864000), (16, 1790000), (20, 1432000), (25, 1145600), (32, 895000), (40, 716000), (50, 572800), (64, 447500), (80, 358000), (100, 286400), (125, 229120), (128, 223750), (160, 179000), (179, 160000), (200, 143200), (250, 114560), (256, 111875), (320, 89500), (358, 80000), (400, 71600), (500, 57280), (625, 45824), (640, 44750), (716, 40000), (800, 35800), (895, 32000), (1000, 28640), (1250, 22912), (1280, 22375), (1432, 20000), (1600, 17900), (1790, 16000), (2000, 14320), (2500, 11456), (2864, 10000), (3200, 8950), (3580, 8000), (4000, 7160), (4475, 6400), (5000, 5728)]