81487854

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{769}}^1$

素因数の和:842

約数の個数: 72

約数和(自身を含む): 209249040

約数和(自身を除く): 127761186

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 58, 63, 87, 126, 174, 203, 261, 406, 522, 609, 769, 841, 1218, 1538, 1682, 1827, 2307, 2523, 3654, 4614, 5046, 5383, 5887, 6921, 7569, 10766, 11774, 13842, 15138, 16149, 17661, 22301, 32298, 35322, 44602, 48447, 52983, 66903, 96894, 105966, 133806, 156107, 200709, 312214, 401418, 468321, 646729, 936642, 1293458, 1404963, 1940187, 2809926, 3880374, 4527103, 5820561, 9054206, 11641122, 13581309, 27162618, 40743927, 81487854]

約数ペア:

[(1, 81487854), (2, 40743927), (3, 27162618), (6, 13581309), (7, 11641122), (9, 9054206), (14, 5820561), (18, 4527103), (21, 3880374), (29, 2809926), (42, 1940187), (58, 1404963), (63, 1293458), (87, 936642), (126, 646729), (174, 468321), (203, 401418), (261, 312214), (406, 200709), (522, 156107), (609, 133806), (769, 105966), (841, 96894), (1218, 66903), (1538, 52983), (1682, 48447), (1827, 44602), (2307, 35322), (2523, 32298), (3654, 22301), (4614, 17661), (5046, 16149), (5383, 15138), (5887, 13842), (6921, 11774), (7569, 10766)]