19890495

素因数分解:

$3^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{587}}^1$

素因数の和:852

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 15671745

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 251, 587, 753, 1255, 1761, 2259, 2935, 3765, 5283, 6777, 8805, 11295, 15849, 26415, 33885, 79245, 147337, 442011, 736685, 1326033, 2210055, 3978099, 6630165, 19890495]

約数ペア:

[(1, 19890495), (3, 6630165), (5, 3978099), (9, 2210055), (15, 1326033), (27, 736685), (45, 442011), (135, 147337), (251, 79245), (587, 33885), (753, 26415), (1255, 15849), (1761, 11295), (2259, 8805), (2935, 6777), (3765, 5283)]