19953339

素因数分解:

$3^1\times 7^3\times {\mathrm{19391}}^1$

素因数の和:19415

約数の個数: 16

約数和(自身を含む): 31027200

約数和(自身を除く): 11073861

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 19391, 58173, 135737, 407211, 950159, 2850477, 6651113, 19953339]

約数ペア:

[(1, 19953339), (3, 6651113), (7, 2850477), (21, 950159), (49, 407211), (147, 135737), (343, 58173), (1029, 19391)]