20996914160

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2407903}}^1$

素因数の和:2408025

約数の個数: 40

約数和(自身を含む): 49265715840

約数和(自身を除く): 28268801680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 2407903, 4815806, 9631612, 12039515, 19263224, 24079030, 38526448, 48158060, 96316120, 192632240, 262461427, 524922854, 1049845708, 1312307135, 2099691416, 2624614270, 4199382832, 5249228540, 10498457080, 20996914160]

約数ペア:

[(1, 20996914160), (2, 10498457080), (4, 5249228540), (5, 4199382832), (8, 2624614270), (10, 2099691416), (16, 1312307135), (20, 1049845708), (40, 524922854), (80, 262461427), (109, 192632240), (218, 96316120), (436, 48158060), (545, 38526448), (872, 24079030), (1090, 19263224), (1744, 12039515), (2180, 9631612), (4360, 4815806), (8720, 2407903)]