21486759

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{433}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 34997760

約数和(自身を除く): 13511001

約数列:

[1, 3, 7, 17, 21, 51, 119, 139, 357, 417, 433, 973, 1299, 2363, 2919, 3031, 7089, 7361, 9093, 16541, 22083, 49623, 51527, 60187, 154581, 180561, 421309, 1023179, 1263927, 3069537, 7162253, 21486759]

約数ペア:

[(1, 21486759), (3, 7162253), (7, 3069537), (17, 1263927), (21, 1023179), (51, 421309), (119, 180561), (139, 154581), (357, 60187), (417, 51527), (433, 49623), (973, 22083), (1299, 16541), (2363, 9093), (2919, 7361), (3031, 7089)]