21390584

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{24989}}^1$

素因数の和:25102

約数の個数: 16

約数和(自身を含む): 40483800

約数和(自身を除く): 19093216

約数列:

[1, 2, 4, 8, 107, 214, 428, 856, 24989, 49978, 99956, 199912, 2673823, 5347646, 10695292, 21390584]

約数ペア:

[(1, 21390584), (2, 10695292), (4, 5347646), (8, 2673823), (107, 199912), (214, 99956), (428, 49978), (856, 24989)]