21991744

素因数分解:

$2^6\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:116

約数の個数: 84

約数和(自身を含む): 49126140

約数和(自身を除く): 27134396

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 41, 58, 64, 68, 82, 116, 136, 164, 232, 272, 289, 328, 464, 493, 544, 578, 656, 697, 928, 986, 1088, 1156, 1189, 1312, 1394, 1856, 1972, 2312, 2378, 2624, 2788, 3944, 4624, 4756, 5576, 7888, 8381, 9248, 9512, 11152, 11849, 15776, 16762, 18496, 19024, 20213, 22304, 23698, 31552, 33524, 38048, 40426, 44608, 47396, 67048, 76096, 80852, 94792, 134096, 161704, 189584, 268192, 323408, 343621, 379168, 536384, 646816, 687242, 758336, 1293632, 1374484, 2748968, 5497936, 10995872, 21991744]

約数ペア:

[(1, 21991744), (2, 10995872), (4, 5497936), (8, 2748968), (16, 1374484), (17, 1293632), (29, 758336), (32, 687242), (34, 646816), (41, 536384), (58, 379168), (64, 343621), (68, 323408), (82, 268192), (116, 189584), (136, 161704), (164, 134096), (232, 94792), (272, 80852), (289, 76096), (328, 67048), (464, 47396), (493, 44608), (544, 40426), (578, 38048), (656, 33524), (697, 31552), (928, 23698), (986, 22304), (1088, 20213), (1156, 19024), (1189, 18496), (1312, 16762), (1394, 15776), (1856, 11849), (1972, 11152), (2312, 9512), (2378, 9248), (2624, 8381), (2788, 7888), (3944, 5576), (4624, 4756)]