21856146

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{280207}}^1$

素因数の和:280225

約数の個数: 16

約数和(自身を含む): 47074944

約数和(自身を除く): 25218798

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 280207, 560414, 840621, 1681242, 3642691, 7285382, 10928073, 21856146]

約数ペア:

[(1, 21856146), (2, 10928073), (3, 7285382), (6, 3642691), (13, 1681242), (26, 840621), (39, 560414), (78, 280207)]