20199654520

素因数分解:

$2^3\times 5^1\times {\mathrm{504991363}}^1$

素因数の和:504991374

約数の個数: 16

約数和(自身を含む): 45449222760

約数和(自身を除く): 25249568240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504991363, 1009982726, 2019965452, 2524956815, 4039930904, 5049913630, 10099827260, 20199654520]

約数ペア:

[(1, 20199654520), (2, 10099827260), (4, 5049913630), (5, 4039930904), (8, 2524956815), (10, 2019965452), (20, 1009982726), (40, 504991363)]