12910000

素因数分解:

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

素因数の和:1319

約数の個数: 50

約数和(自身を含む): 31280612

約数和(自身を除く): 18370612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1291, 2000, 2500, 2582, 5000, 5164, 6455, 10000, 10328, 12910, 20656, 25820, 32275, 51640, 64550, 103280, 129100, 161375, 258200, 322750, 516400, 645500, 806875, 1291000, 1613750, 2582000, 3227500, 6455000, 12910000]

約数ペア:

[(1, 12910000), (2, 6455000), (4, 3227500), (5, 2582000), (8, 1613750), (10, 1291000), (16, 806875), (20, 645500), (25, 516400), (40, 322750), (50, 258200), (80, 161375), (100, 129100), (125, 103280), (200, 64550), (250, 51640), (400, 32275), (500, 25820), (625, 20656), (1000, 12910), (1250, 10328), (1291, 10000), (2000, 6455), (2500, 5164), (2582, 5000)]