20826449

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{421}}^1$

素因数の和:656

約数の個数: 16

約数和(自身を含む): 24631296

約数和(自身を除く): 3804847

約数列:

[1, 7, 37, 191, 259, 421, 1337, 2947, 7067, 15577, 49469, 80411, 109039, 562877, 2975207, 20826449]

約数ペア:

[(1, 20826449), (7, 2975207), (37, 562877), (191, 109039), (259, 80411), (421, 49469), (1337, 15577), (2947, 7067)]