4478020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 9934848

約数和(自身を除く): 5456828

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 127, 164, 172, 205, 215, 254, 410, 430, 508, 635, 820, 860, 1270, 1763, 2540, 3526, 5207, 5461, 7052, 8815, 10414, 10922, 17630, 20828, 21844, 26035, 27305, 35260, 52070, 54610, 104140, 109220, 223901, 447802, 895604, 1119505, 2239010, 4478020]

約数ペア:

[(1, 4478020), (2, 2239010), (4, 1119505), (5, 895604), (10, 447802), (20, 223901), (41, 109220), (43, 104140), (82, 54610), (86, 52070), (127, 35260), (164, 27305), (172, 26035), (205, 21844), (215, 20828), (254, 17630), (410, 10922), (430, 10414), (508, 8815), (635, 7052), (820, 5461), (860, 5207), (1270, 3526), (1763, 2540)]