20659870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3833}}^1$

素因数の和:3865

約数の個数: 48

約数和(自身を含む): 47204208

約数和(自身を除く): 26544338

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3833, 5390, 7666, 19165, 26831, 38330, 42163, 53662, 84326, 134155, 187817, 210815, 268310, 295141, 375634, 421630, 590282, 939085, 1475705, 1878170, 2065987, 2951410, 4131974, 10329935, 20659870]

約数ペア:

[(1, 20659870), (2, 10329935), (5, 4131974), (7, 2951410), (10, 2065987), (11, 1878170), (14, 1475705), (22, 939085), (35, 590282), (49, 421630), (55, 375634), (70, 295141), (77, 268310), (98, 210815), (110, 187817), (154, 134155), (245, 84326), (385, 53662), (490, 42163), (539, 38330), (770, 26831), (1078, 19165), (2695, 7666), (3833, 5390)]