21507544521

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{613}}^1\times {\mathrm{5483}}^1$

素因数の和:6187

約数の個数: 40

約数和(自身を含む): 32594263680

約数和(自身を除く): 11086719159

約数列:

[1, 3, 9, 27, 79, 81, 237, 613, 711, 1839, 2133, 5483, 5517, 6399, 16449, 16551, 48427, 49347, 49653, 145281, 148041, 433157, 435843, 444123, 1299471, 1307529, 3361079, 3898413, 3922587, 10083237, 11695239, 30249711, 35085717, 90749133, 265525241, 272247399, 796575723, 2389727169, 7169181507, 21507544521]

約数ペア:

[(1, 21507544521), (3, 7169181507), (9, 2389727169), (27, 796575723), (79, 272247399), (81, 265525241), (237, 90749133), (613, 35085717), (711, 30249711), (1839, 11695239), (2133, 10083237), (5483, 3922587), (5517, 3898413), (6399, 3361079), (16449, 1307529), (16551, 1299471), (48427, 444123), (49347, 435843), (49653, 433157), (145281, 148041)]