21809095

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1531}}^1$

素因数の和:1591

約数の個数: 32

約数和(自身を含む): 33532416

約数和(自身を除く): 11723321

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 1531, 2035, 2849, 7655, 10717, 14245, 16841, 53585, 56647, 84205, 117887, 283235, 396529, 589435, 623117, 1982645, 3115585, 4361819, 21809095]

約数ペア:

[(1, 21809095), (5, 4361819), (7, 3115585), (11, 1982645), (35, 623117), (37, 589435), (55, 396529), (77, 283235), (185, 117887), (259, 84205), (385, 56647), (407, 53585), (1295, 16841), (1531, 14245), (2035, 10717), (2849, 7655)]