16719440

素因数分解:

$2^4\times 5^1\times {\mathrm{208993}}^1$

素因数の和:209006

約数の個数: 20

約数和(自身を含む): 38872884

約数和(自身を除く): 22153444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 208993, 417986, 835972, 1044965, 1671944, 2089930, 3343888, 4179860, 8359720, 16719440]

約数ペア:

[(1, 16719440), (2, 8359720), (4, 4179860), (5, 3343888), (8, 2089930), (10, 1671944), (16, 1044965), (20, 835972), (40, 417986), (80, 208993)]