21749673

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 11520087

約数列:

[1, 3, 11, 33, 37, 47, 111, 141, 379, 407, 517, 1137, 1221, 1551, 1739, 4169, 5217, 12507, 14023, 17813, 19129, 42069, 53439, 57387, 154253, 195943, 462759, 587829, 659081, 1977243, 7249891, 21749673]

約数ペア:

[(1, 21749673), (3, 7249891), (11, 1977243), (33, 659081), (37, 587829), (47, 462759), (111, 195943), (141, 154253), (379, 57387), (407, 53439), (517, 42069), (1137, 19129), (1221, 17813), (1551, 14023), (1739, 12507), (4169, 5217)]