21879088

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 120

約数和(自身を含む): 55978560

約数和(自身を除く): 34099472

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 43, 44, 49, 56, 59, 77, 86, 88, 98, 112, 118, 154, 172, 176, 196, 236, 301, 308, 344, 392, 413, 472, 473, 539, 602, 616, 649, 688, 784, 826, 944, 946, 1078, 1204, 1232, 1298, 1652, 1892, 2107, 2156, 2408, 2537, 2596, 2891, 3304, 3311, 3784, 4214, 4312, 4543, 4816, 5074, 5192, 5782, 6608, 6622, 7568, 8428, 8624, 9086, 10148, 10384, 11564, 13244, 16856, 17759, 18172, 20296, 23128, 23177, 26488, 27907, 31801, 33712, 35518, 36344, 40592, 46256, 46354, 52976, 55814, 63602, 71036, 72688, 92708, 111628, 124313, 127204, 142072, 185416, 195349, 223256, 248626, 254408, 284144, 370832, 390698, 446512, 497252, 508816, 781396, 994504, 1367443, 1562792, 1989008, 2734886, 3125584, 5469772, 10939544, 21879088]

約数ペア:

[(1, 21879088), (2, 10939544), (4, 5469772), (7, 3125584), (8, 2734886), (11, 1989008), (14, 1562792), (16, 1367443), (22, 994504), (28, 781396), (43, 508816), (44, 497252), (49, 446512), (56, 390698), (59, 370832), (77, 284144), (86, 254408), (88, 248626), (98, 223256), (112, 195349), (118, 185416), (154, 142072), (172, 127204), (176, 124313), (196, 111628), (236, 92708), (301, 72688), (308, 71036), (344, 63602), (392, 55814), (413, 52976), (472, 46354), (473, 46256), (539, 40592), (602, 36344), (616, 35518), (649, 33712), (688, 31801), (784, 27907), (826, 26488), (944, 23177), (946, 23128), (1078, 20296), (1204, 18172), (1232, 17759), (1298, 16856), (1652, 13244), (1892, 11564), (2107, 10384), (2156, 10148), (2408, 9086), (2537, 8624), (2596, 8428), (2891, 7568), (3304, 6622), (3311, 6608), (3784, 5782), (4214, 5192), (4312, 5074), (4543, 4816)]