1640667021

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{18731}}^1$

素因数の和:18881

約数の個数: 32

約数和(自身を含む): 2584716288

約数和(自身を除く): 944049267

約数列:

[1, 3, 7, 21, 43, 97, 129, 291, 301, 679, 903, 2037, 4171, 12513, 18731, 29197, 56193, 87591, 131117, 393351, 805433, 1816907, 2416299, 5450721, 5638031, 12718349, 16914093, 38155047, 78127001, 234381003, 546889007, 1640667021]

約数ペア:

[(1, 1640667021), (3, 546889007), (7, 234381003), (21, 78127001), (43, 38155047), (97, 16914093), (129, 12718349), (291, 5638031), (301, 5450721), (679, 2416299), (903, 1816907), (2037, 805433), (4171, 393351), (12513, 131117), (18731, 87591), (29197, 56193)]