3987995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2339}}^1$

素因数の和:2386

約数の個数: 16

約数和(自身を含む): 5391360

約数和(自身を除く): 1403365

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 2339, 11695, 25729, 72509, 128645, 362545, 797599, 3987995]

約数ペア:

[(1, 3987995), (5, 797599), (11, 362545), (31, 128645), (55, 72509), (155, 25729), (341, 11695), (1705, 2339)]