21931221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{19391}}^1$

素因数の和:19436

約数の個数: 16

約数和(自身を含む): 32578560

約数和(自身を除く): 10647339

約数列:

[1, 3, 13, 29, 39, 87, 377, 1131, 19391, 58173, 252083, 562339, 756249, 1687017, 7310407, 21931221]

約数ペア:

[(1, 21931221), (3, 7310407), (13, 1687017), (29, 756249), (39, 562339), (87, 252083), (377, 58173), (1131, 19391)]