20431180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13267}}^1$

素因数の和:13294

約数の個数: 48

約数和(自身を含む): 53496576

約数和(自身を除く): 33065396

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13267, 26534, 53068, 66335, 92869, 132670, 145937, 185738, 265340, 291874, 371476, 464345, 583748, 729685, 928690, 1021559, 1459370, 1857380, 2043118, 2918740, 4086236, 5107795, 10215590, 20431180]

約数ペア:

[(1, 20431180), (2, 10215590), (4, 5107795), (5, 4086236), (7, 2918740), (10, 2043118), (11, 1857380), (14, 1459370), (20, 1021559), (22, 928690), (28, 729685), (35, 583748), (44, 464345), (55, 371476), (70, 291874), (77, 265340), (110, 185738), (140, 145937), (154, 132670), (220, 92869), (308, 66335), (385, 53068), (770, 26534), (1540, 13267)]