21705408

素因数分解:

$2^6\times 3^4\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 140

約数和(自身を含む): 66385440

約数和(自身を除く): 44680032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 53, 54, 64, 72, 79, 81, 96, 106, 108, 144, 158, 159, 162, 192, 212, 216, 237, 288, 316, 318, 324, 424, 432, 474, 477, 576, 632, 636, 648, 711, 848, 864, 948, 954, 1264, 1272, 1296, 1422, 1431, 1696, 1728, 1896, 1908, 2133, 2528, 2544, 2592, 2844, 2862, 3392, 3792, 3816, 4187, 4266, 4293, 5056, 5088, 5184, 5688, 5724, 6399, 7584, 7632, 8374, 8532, 8586, 10176, 11376, 11448, 12561, 12798, 15168, 15264, 16748, 17064, 17172, 22752, 22896, 25122, 25596, 30528, 33496, 34128, 34344, 37683, 45504, 45792, 50244, 51192, 66992, 68256, 68688, 75366, 91584, 100488, 102384, 113049, 133984, 136512, 137376, 150732, 200976, 204768, 226098, 267968, 274752, 301464, 339147, 401952, 409536, 452196, 602928, 678294, 803904, 904392, 1205856, 1356588, 1808784, 2411712, 2713176, 3617568, 5426352, 7235136, 10852704, 21705408]

約数ペア:

[(1, 21705408), (2, 10852704), (3, 7235136), (4, 5426352), (6, 3617568), (8, 2713176), (9, 2411712), (12, 1808784), (16, 1356588), (18, 1205856), (24, 904392), (27, 803904), (32, 678294), (36, 602928), (48, 452196), (53, 409536), (54, 401952), (64, 339147), (72, 301464), (79, 274752), (81, 267968), (96, 226098), (106, 204768), (108, 200976), (144, 150732), (158, 137376), (159, 136512), (162, 133984), (192, 113049), (212, 102384), (216, 100488), (237, 91584), (288, 75366), (316, 68688), (318, 68256), (324, 66992), (424, 51192), (432, 50244), (474, 45792), (477, 45504), (576, 37683), (632, 34344), (636, 34128), (648, 33496), (711, 30528), (848, 25596), (864, 25122), (948, 22896), (954, 22752), (1264, 17172), (1272, 17064), (1296, 16748), (1422, 15264), (1431, 15168), (1696, 12798), (1728, 12561), (1896, 11448), (1908, 11376), (2133, 10176), (2528, 8586), (2544, 8532), (2592, 8374), (2844, 7632), (2862, 7584), (3392, 6399), (3792, 5724), (3816, 5688), (4187, 5184), (4266, 5088), (4293, 5056)]