209955945

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{1901}}^1$

素因数の和:2145

約数の個数: 32

約数和(自身を含む): 346924800

約数和(自身を除く): 136968855

約数列:

[1, 3, 5, 15, 37, 111, 185, 199, 555, 597, 995, 1901, 2985, 5703, 7363, 9505, 22089, 28515, 36815, 70337, 110445, 211011, 351685, 378299, 1055055, 1134897, 1891495, 5674485, 13997063, 41991189, 69985315, 209955945]

約数ペア:

[(1, 209955945), (3, 69985315), (5, 41991189), (15, 13997063), (37, 5674485), (111, 1891495), (185, 1134897), (199, 1055055), (555, 378299), (597, 351685), (995, 211011), (1901, 110445), (2985, 70337), (5703, 36815), (7363, 28515), (9505, 22089)]