21653345

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2851}}^1$

素因数の和:2901

約数の個数: 24

約数和(自身を含む): 31212288

約数和(自身を除く): 9558943

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2851, 7595, 14255, 19957, 88381, 99785, 139699, 441905, 618667, 698495, 3093335, 4330669, 21653345]

約数ペア:

[(1, 21653345), (5, 4330669), (7, 3093335), (31, 698495), (35, 618667), (49, 441905), (155, 139699), (217, 99785), (245, 88381), (1085, 19957), (1519, 14255), (2851, 7595)]