81785900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{16691}}^1$

素因数の和:16719

約数の個数: 54

約数和(自身を含む): 206463348

約数和(自身を除く): 124677448

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 16691, 33382, 66764, 83455, 116837, 166910, 233674, 333820, 417275, 467348, 584185, 817859, 834550, 1168370, 1635718, 1669100, 2336740, 2920925, 3271436, 4089295, 5841850, 8178590, 11683700, 16357180, 20446475, 40892950, 81785900]

約数ペア:

[(1, 81785900), (2, 40892950), (4, 20446475), (5, 16357180), (7, 11683700), (10, 8178590), (14, 5841850), (20, 4089295), (25, 3271436), (28, 2920925), (35, 2336740), (49, 1669100), (50, 1635718), (70, 1168370), (98, 834550), (100, 817859), (140, 584185), (175, 467348), (196, 417275), (245, 333820), (350, 233674), (490, 166910), (700, 116837), (980, 83455), (1225, 66764), (2450, 33382), (4900, 16691)]