81332000

素因数分解:

$2^5\times 5^3\times {\mathrm{20333}}^1$

素因数の和:20358

約数の個数: 48

約数和(自身を含む): 199842552

約数和(自身を除く): 118510552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 20333, 40666, 81332, 101665, 162664, 203330, 325328, 406660, 508325, 650656, 813320, 1016650, 1626640, 2033300, 2541625, 3253280, 4066600, 5083250, 8133200, 10166500, 16266400, 20333000, 40666000, 81332000]

約数ペア:

[(1, 81332000), (2, 40666000), (4, 20333000), (5, 16266400), (8, 10166500), (10, 8133200), (16, 5083250), (20, 4066600), (25, 3253280), (32, 2541625), (40, 2033300), (50, 1626640), (80, 1016650), (100, 813320), (125, 650656), (160, 508325), (200, 406660), (250, 325328), (400, 203330), (500, 162664), (800, 101665), (1000, 81332), (2000, 40666), (4000, 20333)]