21005740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150041}}^1$

素因数の和:150057

約数の個数: 24

約数和(自身を含む): 50414112

約数和(自身を除く): 29408372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150041, 300082, 600164, 750205, 1050287, 1500410, 2100574, 3000820, 4201148, 5251435, 10502870, 21005740]

約数ペア:

[(1, 21005740), (2, 10502870), (4, 5251435), (5, 4201148), (7, 3000820), (10, 2100574), (14, 1500410), (20, 1050287), (28, 750205), (35, 600164), (70, 300082), (140, 150041)]