20410455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 17909673

約数列:

[1, 3, 5, 13, 15, 17, 39, 47, 51, 65, 85, 131, 141, 195, 221, 235, 255, 393, 611, 655, 663, 705, 799, 1105, 1703, 1833, 1965, 2227, 2397, 3055, 3315, 3995, 5109, 6157, 6681, 8515, 9165, 10387, 11135, 11985, 18471, 25545, 28951, 30785, 31161, 33405, 51935, 80041, 86853, 92355, 104669, 144755, 155805, 240123, 314007, 400205, 434265, 523345, 1200615, 1360697, 1570035, 4082091, 6803485, 20410455]

約数ペア:

[(1, 20410455), (3, 6803485), (5, 4082091), (13, 1570035), (15, 1360697), (17, 1200615), (39, 523345), (47, 434265), (51, 400205), (65, 314007), (85, 240123), (131, 155805), (141, 144755), (195, 104669), (221, 92355), (235, 86853), (255, 80041), (393, 51935), (611, 33405), (655, 31161), (663, 30785), (705, 28951), (799, 25545), (1105, 18471), (1703, 11985), (1833, 11135), (1965, 10387), (2227, 9165), (2397, 8515), (3055, 6681), (3315, 6157), (3995, 5109)]