21978286

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{2879}}^1$

素因数の和:3239

約数の個数: 16

約数和(自身を含む): 36080640

約数和(自身を除く): 14102354

約数列:

[1, 2, 11, 22, 347, 694, 2879, 3817, 5758, 7634, 31669, 63338, 999013, 1998026, 10989143, 21978286]

約数ペア:

[(1, 21978286), (2, 10989143), (11, 1998026), (22, 999013), (347, 63338), (694, 31669), (2879, 7634), (3817, 5758)]