21808738

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:882

約数の個数: 32

約数和(自身を含む): 39502080

約数和(自身を除く): 17693342

約数列:

[1, 2, 7, 14, 23, 46, 89, 161, 178, 322, 623, 761, 1246, 1522, 2047, 4094, 5327, 10654, 14329, 17503, 28658, 35006, 67729, 122521, 135458, 245042, 474103, 948206, 1557767, 3115534, 10904369, 21808738]

約数ペア:

[(1, 21808738), (2, 10904369), (7, 3115534), (14, 1557767), (23, 948206), (46, 474103), (89, 245042), (161, 135458), (178, 122521), (322, 67729), (623, 35006), (761, 28658), (1246, 17503), (1522, 14329), (2047, 10654), (4094, 5327)]