9720580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 21288960

約数和(自身を除く): 11568380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 127, 172, 178, 215, 254, 356, 430, 445, 508, 635, 860, 890, 1270, 1780, 2540, 3827, 5461, 7654, 10922, 11303, 15308, 19135, 21844, 22606, 27305, 38270, 45212, 54610, 56515, 76540, 109220, 113030, 226060, 486029, 972058, 1944116, 2430145, 4860290, 9720580]

約数ペア:

[(1, 9720580), (2, 4860290), (4, 2430145), (5, 1944116), (10, 972058), (20, 486029), (43, 226060), (86, 113030), (89, 109220), (127, 76540), (172, 56515), (178, 54610), (215, 45212), (254, 38270), (356, 27305), (430, 22606), (445, 21844), (508, 19135), (635, 15308), (860, 11303), (890, 10922), (1270, 7654), (1780, 5461), (2540, 3827)]