21247881

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{761}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 29187648

約数和(自身を除く): 7939767

約数列:

[1, 3, 41, 123, 227, 681, 761, 2283, 9307, 27921, 31201, 93603, 172747, 518241, 7082627, 21247881]

約数ペア:

[(1, 21247881), (3, 7082627), (41, 518241), (123, 172747), (227, 93603), (681, 31201), (761, 27921), (2283, 9307)]