21560845

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 28204704

約数和(自身を除く): 6643859

約数列:

[1, 5, 17, 43, 85, 215, 289, 347, 731, 1445, 1735, 3655, 5899, 12427, 14921, 29495, 62135, 74605, 100283, 253657, 501415, 1268285, 4312169, 21560845]

約数ペア:

[(1, 21560845), (5, 4312169), (17, 1268285), (43, 501415), (85, 253657), (215, 100283), (289, 74605), (347, 62135), (731, 29495), (1445, 14921), (1735, 12427), (3655, 5899)]