217831491

素因数分解:

$3^3\times {\mathrm{349}}^1\times {\mathrm{23117}}^1$

素因数の和:23475

約数の個数: 16

約数和(自身を含む): 323652000

約数和(自身を除く): 105820509

約数列:

[1, 3, 9, 27, 349, 1047, 3141, 9423, 23117, 69351, 208053, 624159, 8067833, 24203499, 72610497, 217831491]

約数ペア:

[(1, 217831491), (3, 72610497), (9, 24203499), (27, 8067833), (349, 624159), (1047, 208053), (3141, 69351), (9423, 23117)]