20709405

素因数分解:

$3^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{857}}^1$

素因数の和:1050

約数の個数: 32

約数和(自身を含む): 37065600

約数和(自身を除く): 16356195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 179, 537, 857, 895, 1611, 2571, 2685, 4285, 4833, 7713, 8055, 12855, 23139, 24165, 38565, 115695, 153403, 460209, 767015, 1380627, 2301045, 4141881, 6903135, 20709405]

約数ペア:

[(1, 20709405), (3, 6903135), (5, 4141881), (9, 2301045), (15, 1380627), (27, 767015), (45, 460209), (135, 153403), (179, 115695), (537, 38565), (857, 24165), (895, 23139), (1611, 12855), (2571, 8055), (2685, 7713), (4285, 4833)]