19916351

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11519}}^1$

素因数の和:11558

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 5888449

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11519, 80633, 149747, 218861, 1048229, 1532027, 2845193, 19916351]

約数ペア:

[(1, 19916351), (7, 2845193), (13, 1532027), (19, 1048229), (91, 218861), (133, 149747), (247, 80633), (1729, 11519)]