21783956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{6991}}^1$

素因数の和:7055

約数の個数: 24

約数和(自身を含む): 41112960

約数和(自身を除く): 19329004

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 779, 1558, 3116, 6991, 13982, 27964, 132829, 265658, 286631, 531316, 573262, 1146524, 5445989, 10891978, 21783956]

約数ペア:

[(1, 21783956), (2, 10891978), (4, 5445989), (19, 1146524), (38, 573262), (41, 531316), (76, 286631), (82, 265658), (164, 132829), (779, 27964), (1558, 13982), (3116, 6991)]