21298040

素因数分解:

$2^3\times 5^1\times {\mathrm{532451}}^1$

素因数の和:532462

約数の個数: 16

約数和(自身を含む): 47920680

約数和(自身を除く): 26622640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532451, 1064902, 2129804, 2662255, 4259608, 5324510, 10649020, 21298040]

約数ペア:

[(1, 21298040), (2, 10649020), (4, 5324510), (5, 4259608), (8, 2662255), (10, 2129804), (20, 1064902), (40, 532451)]