21149645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 7808179

約数列:

[1, 5, 11, 41, 55, 83, 113, 205, 415, 451, 565, 913, 1243, 2255, 3403, 4565, 4633, 6215, 9379, 17015, 23165, 37433, 46895, 50963, 103169, 187165, 254815, 384539, 515845, 1922695, 4229929, 21149645]

約数ペア:

[(1, 21149645), (5, 4229929), (11, 1922695), (41, 515845), (55, 384539), (83, 254815), (113, 187165), (205, 103169), (415, 50963), (451, 46895), (565, 37433), (913, 23165), (1243, 17015), (2255, 9379), (3403, 6215), (4565, 4633)]