40816000

素因数分解:

$2^7\times 5^3\times {\mathrm{2551}}^1$

素因数の和:2580

約数の個数: 64

約数和(自身を含む): 101518560

約数和(自身を除く): 60702560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1600, 2000, 2551, 3200, 4000, 5102, 8000, 10204, 12755, 16000, 20408, 25510, 40816, 51020, 63775, 81632, 102040, 127550, 163264, 204080, 255100, 318875, 326528, 408160, 510200, 637750, 816320, 1020400, 1275500, 1632640, 2040800, 2551000, 4081600, 5102000, 8163200, 10204000, 20408000, 40816000]

約数ペア:

[(1, 40816000), (2, 20408000), (4, 10204000), (5, 8163200), (8, 5102000), (10, 4081600), (16, 2551000), (20, 2040800), (25, 1632640), (32, 1275500), (40, 1020400), (50, 816320), (64, 637750), (80, 510200), (100, 408160), (125, 326528), (128, 318875), (160, 255100), (200, 204080), (250, 163264), (320, 127550), (400, 102040), (500, 81632), (640, 63775), (800, 51020), (1000, 40816), (1600, 25510), (2000, 20408), (2551, 16000), (3200, 12755), (4000, 10204), (5102, 8000)]