21609441

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2579}}^1$

素因数の和:2618

約数の個数: 36

約数和(自身を含む): 38235600

約数和(自身を除く): 16626159

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2579, 2793, 7737, 8379, 18053, 23211, 49001, 54159, 126371, 147003, 162477, 343007, 379113, 441009, 1029021, 1137339, 2401049, 3087063, 7203147, 21609441]

約数ペア:

[(1, 21609441), (3, 7203147), (7, 3087063), (9, 2401049), (19, 1137339), (21, 1029021), (49, 441009), (57, 379113), (63, 343007), (133, 162477), (147, 147003), (171, 126371), (399, 54159), (441, 49001), (931, 23211), (1197, 18053), (2579, 8379), (2793, 7737)]