21029408

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:130

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 26870752

約数列:

[1, 2, 4, 8, 16, 17, 29, 31, 32, 34, 43, 58, 62, 68, 86, 116, 124, 136, 172, 232, 248, 272, 344, 464, 493, 496, 527, 544, 688, 731, 899, 928, 986, 992, 1054, 1247, 1333, 1376, 1462, 1798, 1972, 2108, 2494, 2666, 2924, 3596, 3944, 4216, 4988, 5332, 5848, 7192, 7888, 8432, 9976, 10664, 11696, 14384, 15283, 15776, 16864, 19952, 21199, 21328, 22661, 23392, 28768, 30566, 38657, 39904, 42398, 42656, 45322, 61132, 77314, 84796, 90644, 122264, 154628, 169592, 181288, 244528, 309256, 339184, 362576, 489056, 618512, 657169, 678368, 725152, 1237024, 1314338, 2628676, 5257352, 10514704, 21029408]

約数ペア:

[(1, 21029408), (2, 10514704), (4, 5257352), (8, 2628676), (16, 1314338), (17, 1237024), (29, 725152), (31, 678368), (32, 657169), (34, 618512), (43, 489056), (58, 362576), (62, 339184), (68, 309256), (86, 244528), (116, 181288), (124, 169592), (136, 154628), (172, 122264), (232, 90644), (248, 84796), (272, 77314), (344, 61132), (464, 45322), (493, 42656), (496, 42398), (527, 39904), (544, 38657), (688, 30566), (731, 28768), (899, 23392), (928, 22661), (986, 21328), (992, 21199), (1054, 19952), (1247, 16864), (1333, 15776), (1376, 15283), (1462, 14384), (1798, 11696), (1972, 10664), (2108, 9976), (2494, 8432), (2666, 7888), (2924, 7192), (3596, 5848), (3944, 5332), (4216, 4988)]