16979440

素因数分解:

$2^4\times 5^1\times {\mathrm{212243}}^1$

素因数の和:212256

約数の個数: 20

約数和(自身を含む): 39477384

約数和(自身を除く): 22497944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 212243, 424486, 848972, 1061215, 1697944, 2122430, 3395888, 4244860, 8489720, 16979440]

約数ペア:

[(1, 16979440), (2, 8489720), (4, 4244860), (5, 3395888), (8, 2122430), (10, 1697944), (16, 1061215), (20, 848972), (40, 424486), (80, 212243)]