20505912

素因数分解:

$2^3\times 3^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:130

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 41702088

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 47, 49, 53, 56, 84, 94, 98, 106, 141, 147, 159, 168, 188, 196, 212, 282, 294, 318, 329, 343, 371, 376, 392, 424, 564, 588, 636, 658, 686, 742, 987, 1029, 1113, 1128, 1176, 1272, 1316, 1372, 1484, 1974, 2058, 2226, 2303, 2491, 2597, 2632, 2744, 2968, 3948, 4116, 4452, 4606, 4982, 5194, 6909, 7473, 7791, 7896, 8232, 8904, 9212, 9964, 10388, 13818, 14946, 15582, 16121, 17437, 18179, 18424, 19928, 20776, 27636, 29892, 31164, 32242, 34874, 36358, 48363, 52311, 54537, 55272, 59784, 62328, 64484, 69748, 72716, 96726, 104622, 109074, 122059, 128968, 139496, 145432, 193452, 209244, 218148, 244118, 366177, 386904, 418488, 436296, 488236, 732354, 854413, 976472, 1464708, 1708826, 2563239, 2929416, 3417652, 5126478, 6835304, 10252956, 20505912]

約数ペア:

[(1, 20505912), (2, 10252956), (3, 6835304), (4, 5126478), (6, 3417652), (7, 2929416), (8, 2563239), (12, 1708826), (14, 1464708), (21, 976472), (24, 854413), (28, 732354), (42, 488236), (47, 436296), (49, 418488), (53, 386904), (56, 366177), (84, 244118), (94, 218148), (98, 209244), (106, 193452), (141, 145432), (147, 139496), (159, 128968), (168, 122059), (188, 109074), (196, 104622), (212, 96726), (282, 72716), (294, 69748), (318, 64484), (329, 62328), (343, 59784), (371, 55272), (376, 54537), (392, 52311), (424, 48363), (564, 36358), (588, 34874), (636, 32242), (658, 31164), (686, 29892), (742, 27636), (987, 20776), (1029, 19928), (1113, 18424), (1128, 18179), (1176, 17437), (1272, 16121), (1316, 15582), (1372, 14946), (1484, 13818), (1974, 10388), (2058, 9964), (2226, 9212), (2303, 8904), (2491, 8232), (2597, 7896), (2632, 7791), (2744, 7473), (2968, 6909), (3948, 5194), (4116, 4982), (4452, 4606)]