128342005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 172005120

約数和(自身を除く): 43663115

約数列:

[1, 5, 11, 55, 89, 157, 167, 445, 785, 835, 979, 1727, 1837, 4895, 8635, 9185, 13973, 14863, 26219, 69865, 74315, 131095, 153703, 163493, 288409, 768515, 817465, 1442045, 2333491, 11667455, 25668401, 128342005]

約数ペア:

[(1, 128342005), (5, 25668401), (11, 11667455), (55, 2333491), (89, 1442045), (157, 817465), (167, 768515), (445, 288409), (785, 163493), (835, 153703), (979, 131095), (1727, 74315), (1837, 69865), (4895, 26219), (8635, 14863), (9185, 13973)]