19878615

素因数分解:

$3^5\times 5^1\times {\mathrm{16361}}^1$

素因数の和:16381

約数の個数: 24

約数和(自身を含む): 35734608

約数和(自身を除く): 15855993

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16361, 49083, 81805, 147249, 245415, 441747, 736245, 1325241, 2208735, 3975723, 6626205, 19878615]

約数ペア:

[(1, 19878615), (3, 6626205), (5, 3975723), (9, 2208735), (15, 1325241), (27, 736245), (45, 441747), (81, 245415), (135, 147249), (243, 81805), (405, 49083), (1215, 16361)]