19925785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 28024704

約数和(自身を除く): 8098919

約数列:

[1, 5, 11, 17, 55, 85, 101, 187, 211, 505, 935, 1055, 1111, 1717, 2321, 3587, 5555, 8585, 11605, 17935, 18887, 21311, 39457, 94435, 106555, 197285, 234421, 362287, 1172105, 1811435, 3985157, 19925785]

約数ペア:

[(1, 19925785), (5, 3985157), (11, 1811435), (17, 1172105), (55, 362287), (85, 234421), (101, 197285), (187, 106555), (211, 94435), (505, 39457), (935, 21311), (1055, 18887), (1111, 17935), (1717, 11605), (2321, 8585), (3587, 5555)]