807872020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{29123}}^1$

素因数の和:29224

約数の個数: 48

約数和(自身を含む): 1810347840

約数和(自身を除く): 1002475820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 365, 380, 730, 1387, 1460, 2774, 5548, 6935, 13870, 27740, 29123, 58246, 116492, 145615, 291230, 553337, 582460, 1106674, 2125979, 2213348, 2766685, 4251958, 5533370, 8503916, 10629895, 11066740, 21259790, 40393601, 42519580, 80787202, 161574404, 201968005, 403936010, 807872020]

約数ペア:

[(1, 807872020), (2, 403936010), (4, 201968005), (5, 161574404), (10, 80787202), (19, 42519580), (20, 40393601), (38, 21259790), (73, 11066740), (76, 10629895), (95, 8503916), (146, 5533370), (190, 4251958), (292, 2766685), (365, 2213348), (380, 2125979), (730, 1106674), (1387, 582460), (1460, 553337), (2774, 291230), (5548, 145615), (6935, 116492), (13870, 58246), (27740, 29123)]