208963906557

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{78351671}}^1$

素因数の和:78351808

約数の個数: 16

約数和(自身を含む): 320928448512

約数和(自身を除く): 111964541955

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 78351671, 235055013, 548461697, 1645385091, 9950662217, 29851986651, 69654635519, 208963906557]

約数ペア:

[(1, 208963906557), (3, 69654635519), (7, 29851986651), (21, 9950662217), (127, 1645385091), (381, 548461697), (889, 235055013), (2667, 78351671)]