21626907

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 31989312

約数和(自身を除く): 10362405

約数列:

[1, 3, 17, 37, 51, 73, 111, 157, 219, 471, 629, 1241, 1887, 2669, 2701, 3723, 5809, 8007, 8103, 11461, 17427, 34383, 45917, 98753, 137751, 194837, 296259, 424057, 584511, 1272171, 7208969, 21626907]

約数ペア:

[(1, 21626907), (3, 7208969), (17, 1272171), (37, 584511), (51, 424057), (73, 296259), (111, 194837), (157, 137751), (219, 98753), (471, 45917), (629, 34383), (1241, 17427), (1887, 11461), (2669, 8103), (2701, 8007), (3723, 5809)]