20894560

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3037}}^1$

素因数の和:3095

約数の個数: 48

約数和(自身を含む): 50528016

約数和(自身を除く): 29633456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3037, 3440, 6074, 6880, 12148, 15185, 24296, 30370, 48592, 60740, 97184, 121480, 130591, 242960, 261182, 485920, 522364, 652955, 1044728, 1305910, 2089456, 2611820, 4178912, 5223640, 10447280, 20894560]

約数ペア:

[(1, 20894560), (2, 10447280), (4, 5223640), (5, 4178912), (8, 2611820), (10, 2089456), (16, 1305910), (20, 1044728), (32, 652955), (40, 522364), (43, 485920), (80, 261182), (86, 242960), (160, 130591), (172, 121480), (215, 97184), (344, 60740), (430, 48592), (688, 30370), (860, 24296), (1376, 15185), (1720, 12148), (3037, 6880), (3440, 6074)]