20464917

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{457}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 31656960

約数和(自身を除く): 11192043

約数列:

[1, 3, 11, 23, 33, 59, 69, 177, 253, 457, 649, 759, 1357, 1371, 1947, 4071, 5027, 10511, 14927, 15081, 26963, 31533, 44781, 80889, 115621, 296593, 346863, 620149, 889779, 1860447, 6821639, 20464917]

約数ペア:

[(1, 20464917), (3, 6821639), (11, 1860447), (23, 889779), (33, 620149), (59, 346863), (69, 296593), (177, 115621), (253, 80889), (457, 44781), (649, 31533), (759, 26963), (1357, 15081), (1371, 14927), (1947, 10511), (4071, 5027)]