21353563

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 27373680

約数和(自身を除く): 6020117

約数列:

[1, 7, 11, 49, 77, 173, 229, 539, 1211, 1603, 1903, 2519, 8477, 11221, 13321, 17633, 39617, 93247, 123431, 277319, 435787, 1941233, 3050509, 21353563]

約数ペア:

[(1, 21353563), (7, 3050509), (11, 1941233), (49, 435787), (77, 277319), (173, 123431), (229, 93247), (539, 39617), (1211, 17633), (1603, 13321), (1903, 11221), (2519, 8477)]