21991006

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1\times {\mathrm{1151}}^1$

素因数の和:1427

約数の個数: 16

約数和(自身を含む): 33965568

約数和(自身を除く): 11974562

約数列:

[1, 2, 41, 82, 233, 466, 1151, 2302, 9553, 19106, 47191, 94382, 268183, 536366, 10995503, 21991006]

約数ペア:

[(1, 21991006), (2, 10995503), (41, 536366), (82, 268183), (233, 94382), (466, 47191), (1151, 19106), (2302, 9553)]