208713555

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{18047}}^1$

素因数の和:18315

約数の個数: 24

約数和(自身を含む): 363197952

約数和(自身を除く): 154484397

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 2313, 3855, 11565, 18047, 54141, 90235, 162423, 270705, 812115, 4638079, 13914237, 23190395, 41742711, 69571185, 208713555]

約数ペア:

[(1, 208713555), (3, 69571185), (5, 41742711), (9, 23190395), (15, 13914237), (45, 4638079), (257, 812115), (771, 270705), (1285, 162423), (2313, 90235), (3855, 54141), (11565, 18047)]