217420281

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{206477}}^1$

素因数の和:206502

約数の個数: 20

約数和(自身を含む): 349773732

約数和(自身を除く): 132353451

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 206477, 619431, 1858293, 2684201, 5574879, 8052603, 16724637, 24157809, 72473427, 217420281]

約数ペア:

[(1, 217420281), (3, 72473427), (9, 24157809), (13, 16724637), (27, 8052603), (39, 5574879), (81, 2684201), (117, 1858293), (351, 619431), (1053, 206477)]