20867704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:113

約数の個数: 128

約数和(自身を含む): 51710400

約数和(自身を除く): 30842696

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 29, 34, 37, 44, 52, 58, 68, 74, 88, 104, 116, 136, 143, 148, 187, 221, 232, 286, 296, 319, 374, 377, 407, 442, 481, 493, 572, 629, 638, 748, 754, 814, 884, 962, 986, 1073, 1144, 1258, 1276, 1496, 1508, 1628, 1768, 1924, 1972, 2146, 2431, 2516, 2552, 3016, 3256, 3848, 3944, 4147, 4292, 4862, 5032, 5291, 5423, 6409, 6919, 8177, 8294, 8584, 9724, 10582, 10846, 11803, 12818, 13838, 13949, 16354, 16588, 18241, 19448, 21164, 21692, 23606, 25636, 27676, 27898, 32708, 33176, 36482, 42328, 43384, 47212, 51272, 55352, 55796, 65416, 70499, 72964, 89947, 94424, 111592, 140998, 145928, 153439, 179894, 200651, 237133, 281996, 306878, 359788, 401302, 474266, 563992, 613756, 719576, 802604, 948532, 1227512, 1605208, 1897064, 2608463, 5216926, 10433852, 20867704]

約数ペア:

[(1, 20867704), (2, 10433852), (4, 5216926), (8, 2608463), (11, 1897064), (13, 1605208), (17, 1227512), (22, 948532), (26, 802604), (29, 719576), (34, 613756), (37, 563992), (44, 474266), (52, 401302), (58, 359788), (68, 306878), (74, 281996), (88, 237133), (104, 200651), (116, 179894), (136, 153439), (143, 145928), (148, 140998), (187, 111592), (221, 94424), (232, 89947), (286, 72964), (296, 70499), (319, 65416), (374, 55796), (377, 55352), (407, 51272), (442, 47212), (481, 43384), (493, 42328), (572, 36482), (629, 33176), (638, 32708), (748, 27898), (754, 27676), (814, 25636), (884, 23606), (962, 21692), (986, 21164), (1073, 19448), (1144, 18241), (1258, 16588), (1276, 16354), (1496, 13949), (1508, 13838), (1628, 12818), (1768, 11803), (1924, 10846), (1972, 10582), (2146, 9724), (2431, 8584), (2516, 8294), (2552, 8177), (3016, 6919), (3256, 6409), (3848, 5423), (3944, 5291), (4147, 5032), (4292, 4862)]