21345020

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{18089}}^1$

素因数の和:18157

約数の個数: 24

約数和(自身を含む): 45586800

約数和(自身を除く): 24241780

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 18089, 36178, 72356, 90445, 180890, 361780, 1067251, 2134502, 4269004, 5336255, 10672510, 21345020]

約数ペア:

[(1, 21345020), (2, 10672510), (4, 5336255), (5, 4269004), (10, 2134502), (20, 1067251), (59, 361780), (118, 180890), (236, 90445), (295, 72356), (590, 36178), (1180, 18089)]