40399000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 96033600

約数和(自身を除く): 55634600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 355, 500, 568, 569, 710, 1000, 1138, 1420, 1775, 2276, 2840, 2845, 3550, 4552, 5690, 7100, 8875, 11380, 14200, 14225, 17750, 22760, 28450, 35500, 40399, 56900, 71000, 71125, 80798, 113800, 142250, 161596, 201995, 284500, 323192, 403990, 569000, 807980, 1009975, 1615960, 2019950, 4039900, 5049875, 8079800, 10099750, 20199500, 40399000]

約数ペア:

[(1, 40399000), (2, 20199500), (4, 10099750), (5, 8079800), (8, 5049875), (10, 4039900), (20, 2019950), (25, 1615960), (40, 1009975), (50, 807980), (71, 569000), (100, 403990), (125, 323192), (142, 284500), (200, 201995), (250, 161596), (284, 142250), (355, 113800), (500, 80798), (568, 71125), (569, 71000), (710, 56900), (1000, 40399), (1138, 35500), (1420, 28450), (1775, 22760), (2276, 17750), (2840, 14225), (2845, 14200), (3550, 11380), (4552, 8875), (5690, 7100)]