19687221

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 29273400

約数和(自身を除く): 9586179

約数列:

[1, 3, 9, 53, 149, 159, 277, 447, 477, 831, 1341, 2493, 7897, 14681, 23691, 41273, 44043, 71073, 123819, 132129, 371457, 2187469, 6562407, 19687221]

約数ペア:

[(1, 19687221), (3, 6562407), (9, 2187469), (53, 371457), (149, 132129), (159, 123819), (277, 71073), (447, 44043), (477, 41273), (831, 23691), (1341, 14681), (2493, 7897)]