16890320

素因数分解:

$2^4\times 5^1\times {\mathrm{211129}}^1$

素因数の和:211142

約数の個数: 20

約数和(自身を含む): 39270180

約数和(自身を除く): 22379860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211129, 422258, 844516, 1055645, 1689032, 2111290, 3378064, 4222580, 8445160, 16890320]

約数ペア:

[(1, 16890320), (2, 8445160), (4, 4222580), (5, 3378064), (8, 2111290), (10, 1689032), (16, 1055645), (20, 844516), (40, 422258), (80, 211129)]