20731216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1931}}^1$

素因数の和:2011

約数の個数: 40

約数和(自身を含む): 44559648

約数和(自身を除く): 23828432

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 61, 88, 122, 176, 244, 488, 671, 976, 1342, 1931, 2684, 3862, 5368, 7724, 10736, 15448, 21241, 30896, 42482, 84964, 117791, 169928, 235582, 339856, 471164, 942328, 1295701, 1884656, 2591402, 5182804, 10365608, 20731216]

約数ペア:

[(1, 20731216), (2, 10365608), (4, 5182804), (8, 2591402), (11, 1884656), (16, 1295701), (22, 942328), (44, 471164), (61, 339856), (88, 235582), (122, 169928), (176, 117791), (244, 84964), (488, 42482), (671, 30896), (976, 21241), (1342, 15448), (1931, 10736), (2684, 7724), (3862, 5368)]