20890285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{577}}^1$

素因数の和:1152

約数の個数: 16

約数和(自身を含む): 27092016

約数和(自身を除く): 6201731

約数列:

[1, 5, 13, 65, 557, 577, 2785, 2885, 7241, 7501, 36205, 37505, 321389, 1606945, 4178057, 20890285]

約数ペア:

[(1, 20890285), (5, 4178057), (13, 1606945), (65, 321389), (557, 37505), (577, 36205), (2785, 7501), (2885, 7241)]