209805

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 16

約数和(自身を含む): 342144

約数和(自身を除く): 132339

約数列:

[1, 3, 5, 15, 71, 197, 213, 355, 591, 985, 1065, 2955, 13987, 41961, 69935, 209805]

約数ペア:

[(1, 209805), (3, 69935), (5, 41961), (15, 13987), (71, 2955), (197, 1065), (213, 985), (355, 591)]