21328140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{953}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 59941728

約数和(自身を除く): 38613588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 373, 746, 953, 1119, 1492, 1865, 1906, 2238, 2859, 3730, 3812, 4476, 4765, 5595, 5718, 7460, 9530, 11190, 11436, 14295, 19060, 22380, 28590, 57180, 355469, 710938, 1066407, 1421876, 1777345, 2132814, 3554690, 4265628, 5332035, 7109380, 10664070, 21328140]

約数ペア:

[(1, 21328140), (2, 10664070), (3, 7109380), (4, 5332035), (5, 4265628), (6, 3554690), (10, 2132814), (12, 1777345), (15, 1421876), (20, 1066407), (30, 710938), (60, 355469), (373, 57180), (746, 28590), (953, 22380), (1119, 19060), (1492, 14295), (1865, 11436), (1906, 11190), (2238, 9530), (2859, 7460), (3730, 5718), (3812, 5595), (4476, 4765)]