320199140

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^2\times {\mathrm{853}}^1$

素因数の和:1136

約数の個数: 36

約数和(自身を含む): 678156276

約数和(自身を除く): 357957136

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 853, 1370, 1706, 2740, 3412, 4265, 8530, 17060, 18769, 37538, 75076, 93845, 116861, 187690, 233722, 375380, 467444, 584305, 1168610, 2337220, 16009957, 32019914, 64039828, 80049785, 160099570, 320199140]

約数ペア:

[(1, 320199140), (2, 160099570), (4, 80049785), (5, 64039828), (10, 32019914), (20, 16009957), (137, 2337220), (274, 1168610), (548, 584305), (685, 467444), (853, 375380), (1370, 233722), (1706, 187690), (2740, 116861), (3412, 93845), (4265, 75076), (8530, 37538), (17060, 18769)]