19882690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 40629600

約数和(自身を除く): 20746910

約数列:

[1, 2, 5, 10, 17, 29, 34, 37, 58, 74, 85, 109, 145, 170, 185, 218, 290, 370, 493, 545, 629, 986, 1073, 1090, 1258, 1853, 2146, 2465, 3145, 3161, 3706, 4033, 4930, 5365, 6290, 6322, 8066, 9265, 10730, 15805, 18241, 18530, 20165, 31610, 36482, 40330, 53737, 68561, 91205, 107474, 116957, 137122, 182410, 233914, 268685, 342805, 537370, 584785, 685610, 1169570, 1988269, 3976538, 9941345, 19882690]

約数ペア:

[(1, 19882690), (2, 9941345), (5, 3976538), (10, 1988269), (17, 1169570), (29, 685610), (34, 584785), (37, 537370), (58, 342805), (74, 268685), (85, 233914), (109, 182410), (145, 137122), (170, 116957), (185, 107474), (218, 91205), (290, 68561), (370, 53737), (493, 40330), (545, 36482), (629, 31610), (986, 20165), (1073, 18530), (1090, 18241), (1258, 15805), (1853, 10730), (2146, 9265), (2465, 8066), (3145, 6322), (3161, 6290), (3706, 5365), (4033, 4930)]