21365937

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13883}}^1$

素因数の和:13914

約数の個数: 20

約数和(自身を含む): 33599280

約数和(自身を除く): 12233343

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13883, 41649, 124947, 263777, 374841, 791331, 1124523, 2373993, 7121979, 21365937]

約数ペア:

[(1, 21365937), (3, 7121979), (9, 2373993), (19, 1124523), (27, 791331), (57, 374841), (81, 263777), (171, 124947), (513, 41649), (1539, 13883)]