18730640

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1709}}^1$

素因数の和:1859

約数の個数: 40

約数和(自身を含む): 43892280

約数和(自身を除く): 25161640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1709, 2192, 2740, 3418, 5480, 6836, 8545, 10960, 13672, 17090, 27344, 34180, 68360, 136720, 234133, 468266, 936532, 1170665, 1873064, 2341330, 3746128, 4682660, 9365320, 18730640]

約数ペア:

[(1, 18730640), (2, 9365320), (4, 4682660), (5, 3746128), (8, 2341330), (10, 1873064), (16, 1170665), (20, 936532), (40, 468266), (80, 234133), (137, 136720), (274, 68360), (548, 34180), (685, 27344), (1096, 17090), (1370, 13672), (1709, 10960), (2192, 8545), (2740, 6836), (3418, 5480)]