1640902887

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{43691}}^1$

素因数の和:43820

約数の個数: 32

約数和(自身を含む): 2642492160

約数和(自身を除く): 1001589273

約数列:

[1, 3, 9, 13, 27, 39, 107, 117, 321, 351, 963, 1391, 2889, 4173, 12519, 37557, 43691, 131073, 393219, 567983, 1179657, 1703949, 4674937, 5111847, 14024811, 15335541, 42074433, 60774181, 126223299, 182322543, 546967629, 1640902887]

約数ペア:

[(1, 1640902887), (3, 546967629), (9, 182322543), (13, 126223299), (27, 60774181), (39, 42074433), (107, 15335541), (117, 14024811), (321, 5111847), (351, 4674937), (963, 1703949), (1391, 1179657), (2889, 567983), (4173, 393219), (12519, 131073), (37557, 43691)]