1980555

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{157}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 3302832

約数和(自身を除く): 1322277

約数列:

[1, 3, 5, 15, 29, 87, 145, 157, 435, 471, 785, 841, 2355, 2523, 4205, 4553, 12615, 13659, 22765, 68295, 132037, 396111, 660185, 1980555]

約数ペア:

[(1, 1980555), (3, 660185), (5, 396111), (15, 132037), (29, 68295), (87, 22765), (145, 13659), (157, 12615), (435, 4553), (471, 4205), (785, 2523), (841, 2355)]