20923420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1451}}^1$

素因数の和:1570

約数の個数: 48

約数和(自身を含む): 50738688

約数和(自身を除く): 29815268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1442, 1451, 2060, 2884, 2902, 3605, 5804, 7210, 7255, 10157, 14420, 14510, 20314, 29020, 40628, 50785, 101570, 149453, 203140, 298906, 597812, 747265, 1046171, 1494530, 2092342, 2989060, 4184684, 5230855, 10461710, 20923420]

約数ペア:

[(1, 20923420), (2, 10461710), (4, 5230855), (5, 4184684), (7, 2989060), (10, 2092342), (14, 1494530), (20, 1046171), (28, 747265), (35, 597812), (70, 298906), (103, 203140), (140, 149453), (206, 101570), (412, 50785), (515, 40628), (721, 29020), (1030, 20314), (1442, 14510), (1451, 14420), (2060, 10157), (2884, 7255), (2902, 7210), (3605, 5804)]