20688963

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{419}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 28089600

約数和(自身を除く): 7400637

約数列:

[1, 3, 109, 151, 327, 419, 453, 1257, 16459, 45671, 49377, 63269, 137013, 189807, 6896321, 20688963]

約数ペア:

[(1, 20688963), (3, 6896321), (109, 189807), (151, 137013), (327, 63269), (419, 49377), (453, 45671), (1257, 16459)]