21918890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{313127}}^1$

素因数の和:313141

約数の個数: 16

約数和(自身を含む): 45090432

約数和(自身を除く): 23171542

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 313127, 626254, 1565635, 2191889, 3131270, 4383778, 10959445, 21918890]

約数ペア:

[(1, 21918890), (2, 10959445), (5, 4383778), (7, 3131270), (10, 2191889), (14, 1565635), (35, 626254), (70, 313127)]