21807794

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{1061}}^1$

素因数の和:1345

約数の個数: 16

約数和(自身を含む): 33644160

約数和(自身を除く): 11836366

約数列:

[1, 2, 43, 86, 239, 478, 1061, 2122, 10277, 20554, 45623, 91246, 253579, 507158, 10903897, 21807794]

約数ペア:

[(1, 21807794), (2, 10903897), (43, 507158), (86, 253579), (239, 91246), (478, 45623), (1061, 20554), (2122, 10277)]