278491304

素因数分解:

$2^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:288

約数の個数: 128

約数和(自身を含む): 676704000

約数和(自身を除く): 398212696

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 37, 49, 52, 56, 74, 91, 98, 104, 148, 182, 196, 211, 259, 296, 343, 364, 392, 422, 481, 518, 637, 686, 728, 844, 962, 1036, 1274, 1372, 1477, 1688, 1813, 1924, 2072, 2548, 2743, 2744, 2954, 3367, 3626, 3848, 4459, 5096, 5486, 5908, 6734, 7252, 7807, 8918, 10339, 10972, 11816, 12691, 13468, 14504, 15614, 17836, 19201, 20678, 21944, 23569, 25382, 26936, 31228, 35672, 38402, 41356, 47138, 50764, 54649, 62456, 72373, 76804, 82712, 94276, 101491, 101528, 109298, 134407, 144746, 153608, 164983, 188552, 202982, 218596, 268814, 289492, 329966, 382543, 405964, 437192, 537628, 578984, 659932, 710437, 765086, 811928, 940849, 1075256, 1319864, 1420874, 1530172, 1881698, 2677801, 2841748, 3060344, 3763396, 4973059, 5355602, 5683496, 7526792, 9946118, 10711204, 19892236, 21422408, 34811413, 39784472, 69622826, 139245652, 278491304]

約数ペア:

[(1, 278491304), (2, 139245652), (4, 69622826), (7, 39784472), (8, 34811413), (13, 21422408), (14, 19892236), (26, 10711204), (28, 9946118), (37, 7526792), (49, 5683496), (52, 5355602), (56, 4973059), (74, 3763396), (91, 3060344), (98, 2841748), (104, 2677801), (148, 1881698), (182, 1530172), (196, 1420874), (211, 1319864), (259, 1075256), (296, 940849), (343, 811928), (364, 765086), (392, 710437), (422, 659932), (481, 578984), (518, 537628), (637, 437192), (686, 405964), (728, 382543), (844, 329966), (962, 289492), (1036, 268814), (1274, 218596), (1372, 202982), (1477, 188552), (1688, 164983), (1813, 153608), (1924, 144746), (2072, 134407), (2548, 109298), (2743, 101528), (2744, 101491), (2954, 94276), (3367, 82712), (3626, 76804), (3848, 72373), (4459, 62456), (5096, 54649), (5486, 50764), (5908, 47138), (6734, 41356), (7252, 38402), (7807, 35672), (8918, 31228), (10339, 26936), (10972, 25382), (11816, 23569), (12691, 21944), (13468, 20678), (14504, 19201), (15614, 17836)]