21684985

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{32609}}^1$

素因数の和:32640

約数の個数: 16

約数和(自身を含む): 31305600

約数和(自身を除く): 9620615

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 32609, 163045, 228263, 619571, 1141315, 3097855, 4336997, 21684985]

約数ペア:

[(1, 21684985), (5, 4336997), (7, 3097855), (19, 1141315), (35, 619571), (95, 228263), (133, 163045), (665, 32609)]