20874865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{773}}^1$

素因数の和:1280

約数の個数: 16

約数和(自身を含む): 27418176

約数和(自身を除く): 6543311

約数列:

[1, 5, 11, 55, 491, 773, 2455, 3865, 5401, 8503, 27005, 42515, 379543, 1897715, 4174973, 20874865]

約数ペア:

[(1, 20874865), (5, 4174973), (11, 1897715), (55, 379543), (491, 42515), (773, 27005), (2455, 8503), (3865, 5401)]