218275281

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{27281}}^1$

素因数の和:27421

約数の個数: 24

約数和(自身を含む): 363177984

約数和(自身を除く): 144902703

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 8001, 27281, 81843, 190967, 245529, 572901, 1718703, 3464687, 10394061, 24252809, 31182183, 72758427, 218275281]

約数ペア:

[(1, 218275281), (3, 72758427), (7, 31182183), (9, 24252809), (21, 10394061), (63, 3464687), (127, 1718703), (381, 572901), (889, 245529), (1143, 190967), (2667, 81843), (8001, 27281)]