16870180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 36723456

約数和(自身を除く): 19853276

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 131, 137, 188, 235, 262, 274, 470, 524, 548, 655, 685, 940, 1310, 1370, 2620, 2740, 6157, 6439, 12314, 12878, 17947, 24628, 25756, 30785, 32195, 35894, 61570, 64390, 71788, 89735, 123140, 128780, 179470, 358940, 843509, 1687018, 3374036, 4217545, 8435090, 16870180]

約数ペア:

[(1, 16870180), (2, 8435090), (4, 4217545), (5, 3374036), (10, 1687018), (20, 843509), (47, 358940), (94, 179470), (131, 128780), (137, 123140), (188, 89735), (235, 71788), (262, 64390), (274, 61570), (470, 35894), (524, 32195), (548, 30785), (655, 25756), (685, 24628), (940, 17947), (1310, 12878), (1370, 12314), (2620, 6439), (2740, 6157)]