81376000

素因数分解:

$2^8\times 5^3\times {\mathrm{2543}}^1$

素因数の和:2574

約数の個数: 72

約数和(自身を含む): 202797504

約数和(自身を除く): 121421504

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, 640, 800, 1000, 1280, 1600, 2000, 2543, 3200, 4000, 5086, 6400, 8000, 10172, 12715, 16000, 20344, 25430, 32000, 40688, 50860, 63575, 81376, 101720, 127150, 162752, 203440, 254300, 317875, 325504, 406880, 508600, 635750, 651008, 813760, 1017200, 1271500, 1627520, 2034400, 2543000, 3255040, 4068800, 5086000, 8137600, 10172000, 16275200, 20344000, 40688000, 81376000]

約数ペア:

[(1, 81376000), (2, 40688000), (4, 20344000), (5, 16275200), (8, 10172000), (10, 8137600), (16, 5086000), (20, 4068800), (25, 3255040), (32, 2543000), (40, 2034400), (50, 1627520), (64, 1271500), (80, 1017200), (100, 813760), (125, 651008), (128, 635750), (160, 508600), (200, 406880), (250, 325504), (256, 317875), (320, 254300), (400, 203440), (500, 162752), (640, 127150), (800, 101720), (1000, 81376), (1280, 63575), (1600, 50860), (2000, 40688), (2543, 32000), (3200, 25430), (4000, 20344), (5086, 16000), (6400, 12715), (8000, 10172)]