21621081

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 9897639

約数列:

[1, 3, 23, 47, 59, 69, 113, 141, 177, 339, 1081, 1357, 2599, 2773, 3243, 4071, 5311, 6667, 7797, 8319, 15933, 20001, 63779, 122153, 153341, 191337, 313349, 366459, 460023, 940047, 7207027, 21621081]

約数ペア:

[(1, 21621081), (3, 7207027), (23, 940047), (47, 460023), (59, 366459), (69, 313349), (113, 191337), (141, 153341), (177, 122153), (339, 63779), (1081, 20001), (1357, 15933), (2599, 8319), (2773, 7797), (3243, 6667), (4071, 5311)]