55781820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{309899}}^1$

素因数の和:309914

約数の個数: 36

約数和(自身を含む): 169205400

約数和(自身を除く): 113423580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 309899, 619798, 929697, 1239596, 1549495, 1859394, 2789091, 3098990, 3718788, 4648485, 5578182, 6197980, 9296970, 11156364, 13945455, 18593940, 27890910, 55781820]

約数ペア:

[(1, 55781820), (2, 27890910), (3, 18593940), (4, 13945455), (5, 11156364), (6, 9296970), (9, 6197980), (10, 5578182), (12, 4648485), (15, 3718788), (18, 3098990), (20, 2789091), (30, 1859394), (36, 1549495), (45, 1239596), (60, 929697), (90, 619798), (180, 309899)]