171391221

素因数分解:

$3^4\times {\mathrm{641}}^1\times {\mathrm{3301}}^1$

素因数の和:3954

約数の個数: 20

約数和(自身を含む): 256505964

約数和(自身を除く): 85114743

約数列:

[1, 3, 9, 27, 81, 641, 1923, 3301, 5769, 9903, 17307, 29709, 51921, 89127, 267381, 2115941, 6347823, 19043469, 57130407, 171391221]

約数ペア:

[(1, 171391221), (3, 57130407), (9, 19043469), (27, 6347823), (81, 2115941), (641, 267381), (1923, 89127), (3301, 51921), (5769, 29709), (9903, 17307)]