21131968

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2309}}^1$

素因数の和:2345

約数の個数: 56

約数和(自身を含む): 49286160

約数和(自身を除く): 28154192

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 143, 176, 208, 286, 352, 416, 572, 704, 832, 1144, 2288, 2309, 4576, 4618, 9152, 9236, 18472, 25399, 30017, 36944, 50798, 60034, 73888, 101596, 120068, 147776, 203192, 240136, 330187, 406384, 480272, 660374, 812768, 960544, 1320748, 1625536, 1921088, 2641496, 5282992, 10565984, 21131968]

約数ペア:

[(1, 21131968), (2, 10565984), (4, 5282992), (8, 2641496), (11, 1921088), (13, 1625536), (16, 1320748), (22, 960544), (26, 812768), (32, 660374), (44, 480272), (52, 406384), (64, 330187), (88, 240136), (104, 203192), (143, 147776), (176, 120068), (208, 101596), (286, 73888), (352, 60034), (416, 50798), (572, 36944), (704, 30017), (832, 25399), (1144, 18472), (2288, 9236), (2309, 9152), (4576, 4618)]