21109825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2647}}^1$

素因数の和:2697

約数の個数: 24

約数和(自身を含む): 29551680

約数和(自身を除く): 8441855

約数列:

[1, 5, 11, 25, 29, 55, 145, 275, 319, 725, 1595, 2647, 7975, 13235, 29117, 66175, 76763, 145585, 383815, 727925, 844393, 1919075, 4221965, 21109825]

約数ペア:

[(1, 21109825), (5, 4221965), (11, 1919075), (25, 844393), (29, 727925), (55, 383815), (145, 145585), (275, 76763), (319, 66175), (725, 29117), (1595, 13235), (2647, 7975)]