21222171

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4783}}^1$

素因数の和:4835

約数の個数: 24

約数和(自身を含む): 33583680

約数和(自身を除く): 12361509

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4783, 14349, 43047, 81311, 138707, 243933, 416121, 731799, 1248363, 2358019, 7074057, 21222171]

約数ペア:

[(1, 21222171), (3, 7074057), (9, 2358019), (17, 1248363), (29, 731799), (51, 416121), (87, 243933), (153, 138707), (261, 81311), (493, 43047), (1479, 14349), (4437, 4783)]