19897155

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3181}}^1$

素因数の和:3331

約数の個数: 24

約数和(自身を含む): 34747440

約数和(自身を除く): 14850285

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3181, 6255, 9543, 15905, 28629, 47715, 143145, 442159, 1326477, 2210795, 3979431, 6632385, 19897155]

約数ペア:

[(1, 19897155), (3, 6632385), (5, 3979431), (9, 2210795), (15, 1326477), (45, 442159), (139, 143145), (417, 47715), (695, 28629), (1251, 15905), (2085, 9543), (3181, 6255)]