20861966

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13352434

約数列:

[1, 2, 23, 43, 46, 53, 86, 106, 199, 398, 989, 1219, 1978, 2279, 2438, 4558, 4577, 8557, 9154, 10547, 17114, 21094, 52417, 104834, 196811, 242581, 393622, 453521, 485162, 907042, 10430983, 20861966]

約数ペア:

[(1, 20861966), (2, 10430983), (23, 907042), (43, 485162), (46, 453521), (53, 393622), (86, 242581), (106, 196811), (199, 104834), (398, 52417), (989, 21094), (1219, 17114), (1978, 10547), (2279, 9154), (2438, 8557), (4558, 4577)]