168355257

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{421943}}^1$

素因数の和:421972

約数の個数: 16

約数和(自身を含む): 270044160

約数和(自身を除く): 101688903

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 421943, 1265829, 2953601, 8016917, 8860803, 24050751, 56118419, 168355257]

約数ペア:

[(1, 168355257), (3, 56118419), (7, 24050751), (19, 8860803), (21, 8016917), (57, 2953601), (133, 1265829), (399, 421943)]