8649020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 18960480

約数和(自身を除く): 10311460

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 113, 172, 178, 215, 226, 356, 430, 445, 452, 565, 860, 890, 1130, 1780, 2260, 3827, 4859, 7654, 9718, 10057, 15308, 19135, 19436, 20114, 24295, 38270, 40228, 48590, 50285, 76540, 97180, 100570, 201140, 432451, 864902, 1729804, 2162255, 4324510, 8649020]

約数ペア:

[(1, 8649020), (2, 4324510), (4, 2162255), (5, 1729804), (10, 864902), (20, 432451), (43, 201140), (86, 100570), (89, 97180), (113, 76540), (172, 50285), (178, 48590), (215, 40228), (226, 38270), (356, 24295), (430, 20114), (445, 19436), (452, 19135), (565, 15308), (860, 10057), (890, 9718), (1130, 7654), (1780, 4859), (2260, 3827)]