21997857

素因数分解:

$3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{2333}}^1$

素因数の和:2792

約数の個数: 16

約数和(自身を含む): 33609600

約数和(自身を除く): 11611743

約数列:

[1, 3, 7, 21, 449, 1347, 2333, 3143, 6999, 9429, 16331, 48993, 1047517, 3142551, 7332619, 21997857]

約数ペア:

[(1, 21997857), (3, 7332619), (7, 3142551), (21, 1047517), (449, 48993), (1347, 16331), (2333, 9429), (3143, 6999)]