19915827

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{1031}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 27343872

約数和(自身を除く): 7428045

約数列:

[1, 3, 47, 137, 141, 411, 1031, 3093, 6439, 19317, 48457, 141247, 145371, 423741, 6638609, 19915827]

約数ペア:

[(1, 19915827), (3, 6638609), (47, 423741), (137, 145371), (141, 141247), (411, 48457), (1031, 19317), (3093, 6439)]