20478455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{2707}}^1$

素因数の和:2818

約数の個数: 16

約数和(自身を含む): 26321760

約数和(自身を除く): 5843305

約数列:

[1, 5, 17, 85, 89, 445, 1513, 2707, 7565, 13535, 46019, 230095, 240923, 1204615, 4095691, 20478455]

約数ペア:

[(1, 20478455), (5, 4095691), (17, 1204615), (85, 240923), (89, 230095), (445, 46019), (1513, 13535), (2707, 7565)]