81940740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{593}}^1$

素因数の和:666

約数の個数: 144

約数和(自身を含む): 273030912

約数和(自身を除く): 191090172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 140, 141, 147, 188, 196, 210, 235, 245, 282, 294, 329, 420, 470, 490, 564, 588, 593, 658, 705, 735, 940, 980, 987, 1186, 1316, 1410, 1470, 1645, 1779, 1974, 2303, 2372, 2820, 2940, 2965, 3290, 3558, 3948, 4151, 4606, 4935, 5930, 6580, 6909, 7116, 8302, 8895, 9212, 9870, 11515, 11860, 12453, 13818, 16604, 17790, 19740, 20755, 23030, 24906, 27636, 27871, 29057, 34545, 35580, 41510, 46060, 49812, 55742, 58114, 62265, 69090, 83020, 83613, 87171, 111484, 116228, 124530, 138180, 139355, 145285, 167226, 174342, 195097, 249060, 278710, 290570, 334452, 348684, 390194, 418065, 435855, 557420, 581140, 585291, 780388, 836130, 871710, 975485, 1170582, 1365679, 1672260, 1743420, 1950970, 2341164, 2731358, 2926455, 3901940, 4097037, 5462716, 5852910, 6828395, 8194074, 11705820, 13656790, 16388148, 20485185, 27313580, 40970370, 81940740]

約数ペア:

[(1, 81940740), (2, 40970370), (3, 27313580), (4, 20485185), (5, 16388148), (6, 13656790), (7, 11705820), (10, 8194074), (12, 6828395), (14, 5852910), (15, 5462716), (20, 4097037), (21, 3901940), (28, 2926455), (30, 2731358), (35, 2341164), (42, 1950970), (47, 1743420), (49, 1672260), (60, 1365679), (70, 1170582), (84, 975485), (94, 871710), (98, 836130), (105, 780388), (140, 585291), (141, 581140), (147, 557420), (188, 435855), (196, 418065), (210, 390194), (235, 348684), (245, 334452), (282, 290570), (294, 278710), (329, 249060), (420, 195097), (470, 174342), (490, 167226), (564, 145285), (588, 139355), (593, 138180), (658, 124530), (705, 116228), (735, 111484), (940, 87171), (980, 83613), (987, 83020), (1186, 69090), (1316, 62265), (1410, 58114), (1470, 55742), (1645, 49812), (1779, 46060), (1974, 41510), (2303, 35580), (2372, 34545), (2820, 29057), (2940, 27871), (2965, 27636), (3290, 24906), (3558, 23030), (3948, 20755), (4151, 19740), (4606, 17790), (4935, 16604), (5930, 13818), (6580, 12453), (6909, 11860), (7116, 11515), (8302, 9870), (8895, 9212)]