21533897

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7496503

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 359, 451, 779, 1463, 2513, 3157, 3949, 5453, 6821, 8569, 14719, 27643, 47747, 59983, 75031, 103033, 161909, 279661, 525217, 1133363, 1957627, 3076271, 21533897]

約数ペア:

[(1, 21533897), (7, 3076271), (11, 1957627), (19, 1133363), (41, 525217), (77, 279661), (133, 161909), (209, 103033), (287, 75031), (359, 59983), (451, 47747), (779, 27643), (1463, 14719), (2513, 8569), (3157, 6821), (3949, 5453)]