19749565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{857}}^1$

素因数の和:1292

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 6196355

約数列:

[1, 5, 11, 55, 419, 857, 2095, 4285, 4609, 9427, 23045, 47135, 359083, 1795415, 3949913, 19749565]

約数ペア:

[(1, 19749565), (5, 3949913), (11, 1795415), (55, 359083), (419, 47135), (857, 23045), (2095, 9427), (4285, 4609)]