21177156724

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{701}}^1\times {\mathrm{20921}}^1$

素因数の和:21664

約数の個数: 36

約数和(自身を含む): 39170879748

約数和(自身を除く): 17993723024

約数列:

[1, 2, 4, 19, 38, 76, 361, 701, 722, 1402, 1444, 2804, 13319, 20921, 26638, 41842, 53276, 83684, 253061, 397499, 506122, 794998, 1012244, 1589996, 7552481, 14665621, 15104962, 29331242, 30209924, 58662484, 278646799, 557293598, 1114587196, 5294289181, 10588578362, 21177156724]

約数ペア:

[(1, 21177156724), (2, 10588578362), (4, 5294289181), (19, 1114587196), (38, 557293598), (76, 278646799), (361, 58662484), (701, 30209924), (722, 29331242), (1402, 15104962), (1444, 14665621), (2804, 7552481), (13319, 1589996), (20921, 1012244), (26638, 794998), (41842, 506122), (53276, 397499), (83684, 253061)]