21305578

素因数分解:

$2^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{11617}}^1$

素因数の和:11757

約数の個数: 16

約数和(自身を含む): 36805824

約数和(自身を除く): 15500246

約数列:

[1, 2, 7, 14, 131, 262, 917, 1834, 11617, 23234, 81319, 162638, 1521827, 3043654, 10652789, 21305578]

約数ペア:

[(1, 21305578), (2, 10652789), (7, 3043654), (14, 1521827), (131, 162638), (262, 81319), (917, 23234), (1834, 11617)]