212940981

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{238991}}^1$

素因数の和:239014

約数の個数: 20

約数和(自身を含む): 347016384

約数和(自身を除く): 134075403

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 238991, 716973, 2150919, 2628901, 6452757, 7886703, 19358271, 23660109, 70980327, 212940981]

約数ペア:

[(1, 212940981), (3, 70980327), (9, 23660109), (11, 19358271), (27, 7886703), (33, 6452757), (81, 2628901), (99, 2150919), (297, 716973), (891, 238991)]