81497728

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 192265920

約数和(自身を除く): 110768192

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 43, 52, 64, 67, 68, 86, 104, 128, 134, 136, 172, 208, 221, 268, 272, 344, 416, 442, 536, 544, 559, 688, 731, 832, 871, 884, 1072, 1088, 1118, 1139, 1376, 1462, 1664, 1742, 1768, 2144, 2176, 2236, 2278, 2752, 2881, 2924, 3484, 3536, 4288, 4472, 4556, 5504, 5762, 5848, 6968, 7072, 8576, 8944, 9112, 9503, 11524, 11696, 13936, 14144, 14807, 17888, 18224, 19006, 23048, 23392, 27872, 28288, 29614, 35776, 36448, 37453, 38012, 46096, 46784, 48977, 55744, 59228, 71552, 72896, 74906, 76024, 92192, 93568, 97954, 111488, 118456, 145792, 149812, 152048, 184384, 195908, 236912, 299624, 304096, 368768, 391816, 473824, 599248, 608192, 636701, 783632, 947648, 1198496, 1216384, 1273402, 1567264, 1895296, 2396992, 2546804, 3134528, 4793984, 5093608, 6269056, 10187216, 20374432, 40748864, 81497728]

約数ペア:

[(1, 81497728), (2, 40748864), (4, 20374432), (8, 10187216), (13, 6269056), (16, 5093608), (17, 4793984), (26, 3134528), (32, 2546804), (34, 2396992), (43, 1895296), (52, 1567264), (64, 1273402), (67, 1216384), (68, 1198496), (86, 947648), (104, 783632), (128, 636701), (134, 608192), (136, 599248), (172, 473824), (208, 391816), (221, 368768), (268, 304096), (272, 299624), (344, 236912), (416, 195908), (442, 184384), (536, 152048), (544, 149812), (559, 145792), (688, 118456), (731, 111488), (832, 97954), (871, 93568), (884, 92192), (1072, 76024), (1088, 74906), (1118, 72896), (1139, 71552), (1376, 59228), (1462, 55744), (1664, 48977), (1742, 46784), (1768, 46096), (2144, 38012), (2176, 37453), (2236, 36448), (2278, 35776), (2752, 29614), (2881, 28288), (2924, 27872), (3484, 23392), (3536, 23048), (4288, 19006), (4472, 18224), (4556, 17888), (5504, 14807), (5762, 14144), (5848, 13936), (6968, 11696), (7072, 11524), (8576, 9503), (8944, 9112)]