21666502

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 48

約数和(自身を含む): 39414816

約数和(自身を除く): 17748314

約数列:

[1, 2, 11, 13, 22, 26, 71, 97, 121, 142, 143, 194, 242, 286, 781, 923, 1067, 1261, 1562, 1573, 1846, 2134, 2522, 3146, 6887, 8591, 10153, 11737, 13774, 13871, 17182, 20306, 23474, 27742, 75757, 89531, 111683, 151514, 152581, 179062, 223366, 305162, 833327, 984841, 1666654, 1969682, 10833251, 21666502]

約数ペア:

[(1, 21666502), (2, 10833251), (11, 1969682), (13, 1666654), (22, 984841), (26, 833327), (71, 305162), (97, 223366), (121, 179062), (142, 152581), (143, 151514), (194, 111683), (242, 89531), (286, 75757), (781, 27742), (923, 23474), (1067, 20306), (1261, 17182), (1562, 13871), (1573, 13774), (1846, 11737), (2134, 10153), (2522, 8591), (3146, 6887)]