217772020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{1571}}^1$

素因数の和:1848

約数の個数: 48

約数和(自身を含む): 475372800

約数和(自身を除く): 257600780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 239, 290, 478, 580, 956, 1195, 1571, 2390, 3142, 4780, 6284, 6931, 7855, 13862, 15710, 27724, 31420, 34655, 45559, 69310, 91118, 138620, 182236, 227795, 375469, 455590, 750938, 911180, 1501876, 1877345, 3754690, 7509380, 10888601, 21777202, 43554404, 54443005, 108886010, 217772020]

約数ペア:

[(1, 217772020), (2, 108886010), (4, 54443005), (5, 43554404), (10, 21777202), (20, 10888601), (29, 7509380), (58, 3754690), (116, 1877345), (145, 1501876), (239, 911180), (290, 750938), (478, 455590), (580, 375469), (956, 227795), (1195, 182236), (1571, 138620), (2390, 91118), (3142, 69310), (4780, 45559), (6284, 34655), (6931, 31420), (7855, 27724), (13862, 15710)]