21218776

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37357}}^1$

素因数の和:37434

約数の個数: 16

約数和(自身を含む): 40346640

約数和(自身を除く): 19127864

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37357, 74714, 149428, 298856, 2652347, 5304694, 10609388, 21218776]

約数ペア:

[(1, 21218776), (2, 10609388), (4, 5304694), (8, 2652347), (71, 298856), (142, 149428), (284, 74714), (568, 37357)]