21987034

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{1109}}^1$

素因数の和:1565

約数の個数: 16

約数和(自身を含む): 34525440

約数和(自身を除く): 12538406

約数列:

[1, 2, 23, 46, 431, 862, 1109, 2218, 9913, 19826, 25507, 51014, 477979, 955958, 10993517, 21987034]

約数ペア:

[(1, 21987034), (2, 10993517), (23, 955958), (46, 477979), (431, 51014), (862, 25507), (1109, 19826), (2218, 9913)]