21200570511

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1399}}^1\times {\mathrm{2777}}^1$

素因数の和:4303

約数の個数: 32

約数和(自身を含む): 30242419200

約数和(自身を除く): 9041848689

約数列:

[1, 3, 17, 51, 107, 321, 1399, 1819, 2777, 4197, 5457, 8331, 23783, 47209, 71349, 141627, 149693, 297139, 449079, 891417, 2544781, 3885023, 5051363, 7634343, 11655069, 15154089, 66045391, 198136173, 415697461, 1247092383, 7066856837, 21200570511]

約数ペア:

[(1, 21200570511), (3, 7066856837), (17, 1247092383), (51, 415697461), (107, 198136173), (321, 66045391), (1399, 15154089), (1819, 11655069), (2777, 7634343), (4197, 5051363), (5457, 3885023), (8331, 2544781), (23783, 891417), (47209, 449079), (71349, 297139), (141627, 149693)]