20815811415

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3887173}}^1$

素因数の和:3887208

約数の個数: 48

約数和(自身を含む): 43660738368

約数和(自身を除く): 22844926953

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 5355, 3887173, 11661519, 19435865, 27210211, 34984557, 58307595, 66081941, 81630633, 136051055, 174922785, 198245823, 244891899, 330409705, 408153165, 462573587, 594737469, 991229115, 1224459495, 1387720761, 2312867935, 2973687345, 4163162283, 6938603805, 20815811415]

約数ペア:

[(1, 20815811415), (3, 6938603805), (5, 4163162283), (7, 2973687345), (9, 2312867935), (15, 1387720761), (17, 1224459495), (21, 991229115), (35, 594737469), (45, 462573587), (51, 408153165), (63, 330409705), (85, 244891899), (105, 198245823), (119, 174922785), (153, 136051055), (255, 81630633), (315, 66081941), (357, 58307595), (595, 34984557), (765, 27210211), (1071, 19435865), (1785, 11661519), (5355, 3887173)]