20656045

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4624595

約数列:

[1, 5, 109, 151, 251, 545, 755, 1255, 16459, 27359, 37901, 82295, 136795, 189505, 4131209, 20656045]

約数ペア:

[(1, 20656045), (5, 4131209), (109, 189505), (151, 136795), (251, 82295), (545, 37901), (755, 27359), (1255, 16459)]