208520715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{28901}}^1$

素因数の和:28959

約数の個数: 32

約数和(自身を含む): 369020736

約数和(自身を除く): 160500021

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 7215, 28901, 86703, 144505, 375713, 433515, 1069337, 1127139, 1878565, 3208011, 5346685, 5635695, 13901381, 16040055, 41704143, 69506905, 208520715]

約数ペア:

[(1, 208520715), (3, 69506905), (5, 41704143), (13, 16040055), (15, 13901381), (37, 5635695), (39, 5346685), (65, 3208011), (111, 1878565), (185, 1127139), (195, 1069337), (481, 433515), (555, 375713), (1443, 144505), (2405, 86703), (7215, 28901)]