19954557

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2803}}^1$

素因数の和:2929

約数の個数: 24

約数和(自身を含む): 33244224

約数和(自身を除く): 13289667

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2803, 7119, 8409, 19621, 25227, 58863, 176589, 316739, 950217, 2217173, 2850651, 6651519, 19954557]

約数ペア:

[(1, 19954557), (3, 6651519), (7, 2850651), (9, 2217173), (21, 950217), (63, 316739), (113, 176589), (339, 58863), (791, 25227), (1017, 19621), (2373, 8409), (2803, 7119)]