19912431

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{86201}}^1$

素因数の和:86222

約数の個数: 16

約数和(自身を含む): 33101568

約数和(自身を除く): 13189137

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 86201, 258603, 603407, 948211, 1810221, 2844633, 6637477, 19912431]

約数ペア:

[(1, 19912431), (3, 6637477), (7, 2844633), (11, 1810221), (21, 948211), (33, 603407), (77, 258603), (231, 86201)]