81681360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{340339}}^1$

素因数の和:340355

約数の個数: 40

約数和(自身を含む): 253212960

約数和(自身を除く): 171531600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 340339, 680678, 1021017, 1361356, 1701695, 2042034, 2722712, 3403390, 4084068, 5105085, 5445424, 6806780, 8168136, 10210170, 13613560, 16336272, 20420340, 27227120, 40840680, 81681360]

約数ペア:

[(1, 81681360), (2, 40840680), (3, 27227120), (4, 20420340), (5, 16336272), (6, 13613560), (8, 10210170), (10, 8168136), (12, 6806780), (15, 5445424), (16, 5105085), (20, 4084068), (24, 3403390), (30, 2722712), (40, 2042034), (48, 1701695), (60, 1361356), (80, 1021017), (120, 680678), (240, 340339)]