21516700

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{2089}}^1$

素因数の和:2206

約数の個数: 36

約数和(自身を含む): 47167120

約数和(自身を除く): 25650420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 2060, 2089, 2575, 4178, 5150, 8356, 10300, 10445, 20890, 41780, 52225, 104450, 208900, 215167, 430334, 860668, 1075835, 2151670, 4303340, 5379175, 10758350, 21516700]

約数ペア:

[(1, 21516700), (2, 10758350), (4, 5379175), (5, 4303340), (10, 2151670), (20, 1075835), (25, 860668), (50, 430334), (100, 215167), (103, 208900), (206, 104450), (412, 52225), (515, 41780), (1030, 20890), (2060, 10445), (2089, 10300), (2575, 8356), (4178, 5150)]