20489135

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1258

約数の個数: 16

約数和(自身を含む): 25492320

約数和(自身を除く): 5003185

約数列:

[1, 5, 41, 89, 205, 445, 1123, 3649, 5615, 18245, 46043, 99947, 230215, 499735, 4097827, 20489135]

約数ペア:

[(1, 20489135), (5, 4097827), (41, 499735), (89, 230215), (205, 99947), (445, 46043), (1123, 18245), (3649, 5615)]