20421216

素因数分解:

$2^5\times 3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 144

約数和(自身を含む): 63567504

約数和(自身を除く): 43146288

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 32, 34, 36, 43, 48, 51, 68, 72, 86, 96, 97, 102, 129, 136, 144, 153, 172, 194, 204, 258, 272, 288, 291, 306, 344, 387, 388, 408, 516, 544, 582, 612, 688, 731, 774, 776, 816, 873, 1032, 1164, 1224, 1376, 1462, 1548, 1552, 1632, 1649, 1746, 2064, 2193, 2328, 2448, 2924, 3096, 3104, 3298, 3492, 4128, 4171, 4386, 4656, 4896, 4947, 5848, 6192, 6579, 6596, 6984, 8342, 8772, 9312, 9894, 11696, 12384, 12513, 13158, 13192, 13968, 14841, 16684, 17544, 19788, 23392, 25026, 26316, 26384, 27936, 29682, 33368, 35088, 37539, 39576, 50052, 52632, 52768, 59364, 66736, 70176, 70907, 75078, 79152, 100104, 105264, 118728, 133472, 141814, 150156, 158304, 200208, 210528, 212721, 237456, 283628, 300312, 400416, 425442, 474912, 567256, 600624, 638163, 850884, 1134512, 1201248, 1276326, 1701768, 2269024, 2552652, 3403536, 5105304, 6807072, 10210608, 20421216]

約数ペア:

[(1, 20421216), (2, 10210608), (3, 6807072), (4, 5105304), (6, 3403536), (8, 2552652), (9, 2269024), (12, 1701768), (16, 1276326), (17, 1201248), (18, 1134512), (24, 850884), (32, 638163), (34, 600624), (36, 567256), (43, 474912), (48, 425442), (51, 400416), (68, 300312), (72, 283628), (86, 237456), (96, 212721), (97, 210528), (102, 200208), (129, 158304), (136, 150156), (144, 141814), (153, 133472), (172, 118728), (194, 105264), (204, 100104), (258, 79152), (272, 75078), (288, 70907), (291, 70176), (306, 66736), (344, 59364), (387, 52768), (388, 52632), (408, 50052), (516, 39576), (544, 37539), (582, 35088), (612, 33368), (688, 29682), (731, 27936), (774, 26384), (776, 26316), (816, 25026), (873, 23392), (1032, 19788), (1164, 17544), (1224, 16684), (1376, 14841), (1462, 13968), (1548, 13192), (1552, 13158), (1632, 12513), (1649, 12384), (1746, 11696), (2064, 9894), (2193, 9312), (2328, 8772), (2448, 8342), (2924, 6984), (3096, 6596), (3104, 6579), (3298, 6192), (3492, 5848), (4128, 4947), (4171, 4896), (4386, 4656)]