21432439

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1\times {\mathrm{349}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 25446400

約数和(自身を除く): 4013961

約数列:

[1, 7, 31, 217, 283, 349, 1981, 2443, 8773, 10819, 61411, 75733, 98767, 691369, 3061777, 21432439]

約数ペア:

[(1, 21432439), (7, 3061777), (31, 691369), (217, 98767), (283, 75733), (349, 61411), (1981, 10819), (2443, 8773)]