20890020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{827}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 58701888

約数和(自身を除く): 37811868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 421, 827, 842, 1263, 1654, 1684, 2105, 2481, 2526, 3308, 4135, 4210, 4962, 5052, 6315, 8270, 8420, 9924, 12405, 12630, 16540, 24810, 25260, 49620, 348167, 696334, 1044501, 1392668, 1740835, 2089002, 3481670, 4178004, 5222505, 6963340, 10445010, 20890020]

約数ペア:

[(1, 20890020), (2, 10445010), (3, 6963340), (4, 5222505), (5, 4178004), (6, 3481670), (10, 2089002), (12, 1740835), (15, 1392668), (20, 1044501), (30, 696334), (60, 348167), (421, 49620), (827, 25260), (842, 24810), (1263, 16540), (1654, 12630), (1684, 12405), (2105, 9924), (2481, 8420), (2526, 8270), (3308, 6315), (4135, 5052), (4210, 4962)]