13379968640

素因数分解:

$2^7\times 5^1\times {\mathrm{20906201}}^1$

素因数の和:20906220

約数の個数: 32

約数和(自身を含む): 31986489060

約数和(自身を除く): 18606520420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20906201, 41812402, 83624804, 104531005, 167249608, 209062010, 334499216, 418124020, 668998432, 836248040, 1337996864, 1672496080, 2675993728, 3344992160, 6689984320, 13379968640]

約数ペア:

[(1, 13379968640), (2, 6689984320), (4, 3344992160), (5, 2675993728), (8, 1672496080), (10, 1337996864), (16, 836248040), (20, 668998432), (32, 418124020), (40, 334499216), (64, 209062010), (80, 167249608), (128, 104531005), (160, 83624804), (320, 41812402), (640, 20906201)]