208681347

素因数分解:

$3^1\times 7^2\times {\mathrm{509}}^1\times {\mathrm{2789}}^1$

素因数の和:3315

約数の個数: 24

約数和(自身を含む): 324421200

約数和(自身を除く): 115739853

約数列:

[1, 3, 7, 21, 49, 147, 509, 1527, 2789, 3563, 8367, 10689, 19523, 24941, 58569, 74823, 136661, 409983, 1419601, 4258803, 9937207, 29811621, 69560449, 208681347]

約数ペア:

[(1, 208681347), (3, 69560449), (7, 29811621), (21, 9937207), (49, 4258803), (147, 1419601), (509, 409983), (1527, 136661), (2789, 74823), (3563, 58569), (8367, 24941), (10689, 19523)]