21908719

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3319}}^1$

素因数の和:3390

約数の個数: 16

約数和(自身を含む): 26772480

約数和(自身を除く): 4863761

約数列:

[1, 7, 23, 41, 161, 287, 943, 3319, 6601, 23233, 76337, 136079, 534359, 952553, 3129817, 21908719]

約数ペア:

[(1, 21908719), (7, 3129817), (23, 952553), (41, 534359), (161, 136079), (287, 76337), (943, 23233), (3319, 6601)]