17978841

素因数分解:

$3^5\times {\mathrm{241}}^1\times {\mathrm{307}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 27131104

約数和(自身を除く): 9152263

約数列:

[1, 3, 9, 27, 81, 241, 243, 307, 723, 921, 2169, 2763, 6507, 8289, 19521, 24867, 58563, 73987, 74601, 221961, 665883, 1997649, 5992947, 17978841]

約数ペア:

[(1, 17978841), (3, 5992947), (9, 1997649), (27, 665883), (81, 221961), (241, 74601), (243, 73987), (307, 58563), (723, 24867), (921, 19521), (2169, 8289), (2763, 6507)]