21487737

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{907}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 29419200

約数和(自身を除く): 7931463

約数列:

[1, 3, 53, 149, 159, 447, 907, 2721, 7897, 23691, 48071, 135143, 144213, 405429, 7162579, 21487737]

約数ペア:

[(1, 21487737), (3, 7162579), (53, 405429), (149, 144213), (159, 135143), (447, 48071), (907, 23691), (2721, 7897)]