20658968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 45100800

約数和(自身を除く): 24441832

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 59, 88, 92, 118, 173, 184, 236, 253, 346, 472, 506, 649, 692, 1012, 1298, 1357, 1384, 1903, 2024, 2596, 2714, 3806, 3979, 5192, 5428, 7612, 7958, 10207, 10856, 14927, 15224, 15916, 20414, 29854, 31832, 40828, 43769, 59708, 81656, 87538, 112277, 119416, 175076, 224554, 234761, 350152, 449108, 469522, 898216, 939044, 1878088, 2582371, 5164742, 10329484, 20658968]

約数ペア:

[(1, 20658968), (2, 10329484), (4, 5164742), (8, 2582371), (11, 1878088), (22, 939044), (23, 898216), (44, 469522), (46, 449108), (59, 350152), (88, 234761), (92, 224554), (118, 175076), (173, 119416), (184, 112277), (236, 87538), (253, 81656), (346, 59708), (472, 43769), (506, 40828), (649, 31832), (692, 29854), (1012, 20414), (1298, 15916), (1357, 15224), (1384, 14927), (1903, 10856), (2024, 10207), (2596, 7958), (2714, 7612), (3806, 5428), (3979, 5192)]