21201369

素因数分解:

$3^1\times 7^2\times {\mathrm{233}}^1\times {\mathrm{619}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 33078240

約数和(自身を除く): 11876871

約数列:

[1, 3, 7, 21, 49, 147, 233, 619, 699, 1631, 1857, 4333, 4893, 11417, 12999, 30331, 34251, 90993, 144227, 432681, 1009589, 3028767, 7067123, 21201369]

約数ペア:

[(1, 21201369), (3, 7067123), (7, 3028767), (21, 1009589), (49, 432681), (147, 144227), (233, 90993), (619, 34251), (699, 30331), (1631, 12999), (1857, 11417), (4333, 4893)]