21157448

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15649}}^1$

素因数の和:15681

約数の個数: 24

約数和(自身を含む): 42959250

約数和(自身を除く): 21801802

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15649, 31298, 62596, 125192, 203437, 406874, 813748, 1627496, 2644681, 5289362, 10578724, 21157448]

約数ペア:

[(1, 21157448), (2, 10578724), (4, 5289362), (8, 2644681), (13, 1627496), (26, 813748), (52, 406874), (104, 203437), (169, 125192), (338, 62596), (676, 31298), (1352, 15649)]