17987265

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1931}}^1$

素因数の和:1971

約数の個数: 40

約数和(自身を含む): 33663168

約数和(自身を除く): 15675903

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 1931, 3105, 5793, 9315, 9655, 17379, 28965, 44413, 52137, 86895, 133239, 156411, 222065, 260685, 399717, 666195, 782055, 1199151, 1998585, 3597453, 5995755, 17987265]

約数ペア:

[(1, 17987265), (3, 5995755), (5, 3597453), (9, 1998585), (15, 1199151), (23, 782055), (27, 666195), (45, 399717), (69, 260685), (81, 222065), (115, 156411), (135, 133239), (207, 86895), (345, 52137), (405, 44413), (621, 28965), (1035, 17379), (1863, 9655), (1931, 9315), (3105, 5793)]