19910605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27847}}^1$

素因数の和:27876

約数の個数: 16

約数和(自身を含む): 28070784

約数和(自身を除く): 8160179

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27847, 139235, 306317, 362011, 1531585, 1810055, 3982121, 19910605]

約数ペア:

[(1, 19910605), (5, 3982121), (11, 1810055), (13, 1531585), (55, 362011), (65, 306317), (143, 139235), (715, 27847)]