208529973

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{80173}}^1$

素因数の和:80213

約数の個数: 18

約数和(自身を含む): 319974434

約数和(自身を除く): 111444461

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 80173, 240519, 721557, 1362941, 4088823, 12266469, 23169997, 69509991, 208529973]

約数ペア:

[(1, 208529973), (3, 69509991), (9, 23169997), (17, 12266469), (51, 4088823), (153, 1362941), (289, 721557), (867, 240519), (2601, 80173)]