19771895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27653}}^1$

素因数の和:27682

約数の個数: 16

約数和(自身を含む): 27875232

約数和(自身を除く): 8103337

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27653, 138265, 304183, 359489, 1520915, 1797445, 3954379, 19771895]

約数ペア:

[(1, 19771895), (5, 3954379), (11, 1797445), (13, 1520915), (55, 359489), (65, 304183), (143, 138265), (715, 27653)]