21120148

素因数分解:

$2^2\times 7^1\times {\mathrm{571}}^1\times {\mathrm{1321}}^1$

素因数の和:1903

約数の個数: 24

約数和(自身を含む): 42346304

約数和(自身を除く): 21226156

約数列:

[1, 2, 4, 7, 14, 28, 571, 1142, 1321, 2284, 2642, 3997, 5284, 7994, 9247, 15988, 18494, 36988, 754291, 1508582, 3017164, 5280037, 10560074, 21120148]

約数ペア:

[(1, 21120148), (2, 10560074), (4, 5280037), (7, 3017164), (14, 1508582), (28, 754291), (571, 36988), (1142, 18494), (1321, 15988), (2284, 9247), (2642, 7994), (3997, 5284)]