20991408

素因数分解:

$2^4\times 3^1\times {\mathrm{437321}}^1$

素因数の和:437332

約数の個数: 20

約数和(自身を含む): 54227928

約数和(自身を除く): 33236520

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 437321, 874642, 1311963, 1749284, 2623926, 3498568, 5247852, 6997136, 10495704, 20991408]

約数ペア:

[(1, 20991408), (2, 10495704), (3, 6997136), (4, 5247852), (6, 3498568), (8, 2623926), (12, 1749284), (16, 1311963), (24, 874642), (48, 437321)]