21856954

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{647}}^1$

素因数の和:802

約数の個数: 32

約数和(自身を含む): 39813120

約数和(自身を除く): 17956166

約数列:

[1, 2, 7, 14, 19, 38, 127, 133, 254, 266, 647, 889, 1294, 1778, 2413, 4529, 4826, 9058, 12293, 16891, 24586, 33782, 82169, 86051, 164338, 172102, 575183, 1150366, 1561211, 3122422, 10928477, 21856954]

約数ペア:

[(1, 21856954), (2, 10928477), (7, 3122422), (14, 1561211), (19, 1150366), (38, 575183), (127, 172102), (133, 164338), (254, 86051), (266, 82169), (647, 33782), (889, 24586), (1294, 16891), (1778, 12293), (2413, 9058), (4529, 4826)]