18712910

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:836

約数の個数: 32

約数和(自身を含む): 35748000

約数和(自身を除く): 17035090

約数列:

[1, 2, 5, 10, 19, 38, 95, 149, 190, 298, 661, 745, 1322, 1490, 2831, 3305, 5662, 6610, 12559, 14155, 25118, 28310, 62795, 98489, 125590, 196978, 492445, 984890, 1871291, 3742582, 9356455, 18712910]

約数ペア:

[(1, 18712910), (2, 9356455), (5, 3742582), (10, 1871291), (19, 984890), (38, 492445), (95, 196978), (149, 125590), (190, 98489), (298, 62795), (661, 28310), (745, 25118), (1322, 14155), (1490, 12559), (2831, 6610), (3305, 5662)]