208065680

素因数分解:

$2^4\times 5^1\times {\mathrm{2600821}}^1$

素因数の和:2600834

約数の個数: 20

約数和(自身を含む): 483752892

約数和(自身を除く): 275687212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2600821, 5201642, 10403284, 13004105, 20806568, 26008210, 41613136, 52016420, 104032840, 208065680]

約数ペア:

[(1, 208065680), (2, 104032840), (4, 52016420), (5, 41613136), (8, 26008210), (10, 20806568), (16, 13004105), (20, 10403284), (40, 5201642), (80, 2600821)]