21060865

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{8243}}^1$

素因数の和:8328

約数の個数: 16

約数和(自身を含む): 29282688

約数和(自身を除く): 8221823

約数列:

[1, 5, 7, 35, 73, 365, 511, 2555, 8243, 41215, 57701, 288505, 601739, 3008695, 4212173, 21060865]

約数ペア:

[(1, 21060865), (5, 4212173), (7, 3008695), (35, 601739), (73, 288505), (365, 57701), (511, 41215), (2555, 8243)]