28209965

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{719}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 13262035

約数列:

[1, 5, 7, 19, 35, 59, 95, 133, 295, 413, 665, 719, 1121, 2065, 3595, 5033, 5605, 7847, 13661, 25165, 39235, 42421, 68305, 95627, 212105, 296947, 478135, 805999, 1484735, 4029995, 5641993, 28209965]

約数ペア:

[(1, 28209965), (5, 5641993), (7, 4029995), (19, 1484735), (35, 805999), (59, 478135), (95, 296947), (133, 212105), (295, 95627), (413, 68305), (665, 42421), (719, 39235), (1121, 25165), (2065, 13661), (3595, 7847), (5033, 5605)]