81961768

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^2\times {\mathrm{1523}}^1$

素因数の和:1598

約数の個数: 48

約数和(自身を含む): 181599840

約数和(自身を除く): 99638072

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 961, 1523, 1736, 1922, 3046, 3844, 6092, 6727, 7688, 10661, 12184, 13454, 21322, 26908, 42644, 47213, 53816, 85288, 94426, 188852, 330491, 377704, 660982, 1321964, 1463603, 2643928, 2927206, 5854412, 10245221, 11708824, 20490442, 40980884, 81961768]

約数ペア:

[(1, 81961768), (2, 40980884), (4, 20490442), (7, 11708824), (8, 10245221), (14, 5854412), (28, 2927206), (31, 2643928), (56, 1463603), (62, 1321964), (124, 660982), (217, 377704), (248, 330491), (434, 188852), (868, 94426), (961, 85288), (1523, 53816), (1736, 47213), (1922, 42644), (3046, 26908), (3844, 21322), (6092, 13454), (6727, 12184), (7688, 10661)]