51640000

素因数分解:

$2^6\times 5^4\times {\mathrm{1291}}^1$

素因数の和:1323

約数の個数: 70

約数和(自身を含む): 128149604

約数和(自身を除く): 76509604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1250, 1291, 1600, 2000, 2500, 2582, 4000, 5000, 5164, 6455, 8000, 10000, 10328, 12910, 20000, 20656, 25820, 32275, 40000, 41312, 51640, 64550, 82624, 103280, 129100, 161375, 206560, 258200, 322750, 413120, 516400, 645500, 806875, 1032800, 1291000, 1613750, 2065600, 2582000, 3227500, 5164000, 6455000, 10328000, 12910000, 25820000, 51640000]

約数ペア:

[(1, 51640000), (2, 25820000), (4, 12910000), (5, 10328000), (8, 6455000), (10, 5164000), (16, 3227500), (20, 2582000), (25, 2065600), (32, 1613750), (40, 1291000), (50, 1032800), (64, 806875), (80, 645500), (100, 516400), (125, 413120), (160, 322750), (200, 258200), (250, 206560), (320, 161375), (400, 129100), (500, 103280), (625, 82624), (800, 64550), (1000, 51640), (1250, 41312), (1291, 40000), (1600, 32275), (2000, 25820), (2500, 20656), (2582, 20000), (4000, 12910), (5000, 10328), (5164, 10000), (6455, 8000)]