257920497

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{502769}}^1$

素因数の和:502797

約数の個数: 16

約数和(自身を含む): 402216000

約数和(自身を除く): 144295503

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 502769, 1508307, 4524921, 9552611, 13574763, 28657833, 85973499, 257920497]

約数ペア:

[(1, 257920497), (3, 85973499), (9, 28657833), (19, 13574763), (27, 9552611), (57, 4524921), (171, 1508307), (513, 502769)]