19728315

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7187}}^1$

素因数の和:7259

約数の個数: 24

約数和(自身を含む): 34761168

約数和(自身を除く): 15032853

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7187, 21561, 35935, 64683, 107805, 323415, 438407, 1315221, 2192035, 3945663, 6576105, 19728315]

約数ペア:

[(1, 19728315), (3, 6576105), (5, 3945663), (9, 2192035), (15, 1315221), (45, 438407), (61, 323415), (183, 107805), (305, 64683), (549, 35935), (915, 21561), (2745, 7187)]