1720233640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{394549}}^1$

素因数の和:394669

約数の個数: 32

約数和(自身を含む): 3906045000

約数和(自身を除く): 2185811360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 394549, 789098, 1578196, 1972745, 3156392, 3945490, 7890980, 15781960, 43005841, 86011682, 172023364, 215029205, 344046728, 430058410, 860116820, 1720233640]

約数ペア:

[(1, 1720233640), (2, 860116820), (4, 430058410), (5, 344046728), (8, 215029205), (10, 172023364), (20, 86011682), (40, 43005841), (109, 15781960), (218, 7890980), (436, 3945490), (545, 3156392), (872, 1972745), (1090, 1578196), (2180, 789098), (4360, 394549)]